pc basic troubleshooting and its method of elimination

Common computer troubleshooting

1, fault phenomenon: choose a good style with the background, press OK button to take pictures when the white screen and prompted the "device initialization error"

Causes: because of poor contact between the video card and the motherboard or the installation of the driver is caused by errors.

Solution: Re-insert the video card or replace the motherboard slot, if the problem is still not solved, reinstall the video card driver. If the driver is installed correctly, it will show 10moos sdk-2000,WDM audio Capture;10moos sdk-2000,WDM crossbar; 10moos sdk-2000,uideo capture. three options under "My Computer"-right-click Properties-device manager-sound, video, and game controllers. Capture. three options.

2, fault phenomenon: when taking pictures can not see the characters inside the shake, you can see the selected image, but the software in the blue background

Causes: depending on the camera power cord or video cable contact is poor.

Solution: Re-test the power supply and video cable contact is good, the video cable should be inserted into the video card No. 2 hole.

3, fault phenomenon: a large area of a photo that appears when taking pictures, can not properly display all the photos.

Cause: press the OK button too fast when taking pictures.

Solution: retake a specific photo, retake after a stay of one or two seconds and then press the OK button. If all the shots have been taken, even if the above happens, the photo can still be printed out without having to reshoot or erase it.

4, fault phenomenon: print out the photo without date and hair color is not normal.

Cause: black inkjet nozzle clogging.

Solution: clean the print head can be.

5, fault phenomenon: after taking photos printed out the color is not normal color.

Cause: printer nozzle lack of ink

Solution: in the start menu - Settings - Printer Properties application tools, select "clean print head" can be.

6, fault phenomenon: after the photo print out the image tilt.

Cause: the printer is not placed in the paper.

Solution: put the paper can be correct.

7, fault phenomenon: keyboard above the first row of "exit", "lose number", "rearrangement", "change background "Malfunction.

Cause: the board on the green OK key with the red retake key below the signal line contact is poor.

Solution: Pull out the contact wire under the green OK button and the red retake button and reconnect it.

8, fault phenomenon: in the photo time there are horizontal lines in the screen scrolling up and down.

Cause: video cable connection or power transformer failure.

Solution: re-plug the video cable and check whether the power transformer is plugged, such as the failure still exists to replace the video cable can be.

9, fault phenomenon: after the photo can not be printed normally, and prompted the port error.

Cause: printer port settings are wrong.

And the solution: Click Start Menu - Settings - Printer Properties - Detailed information in the adjustment of the port can be. (USB cable select PUSBI port, parallel port cable select LPTI port)

10, the failure phenomenon: small keyboard can not be used, but connected to the large keyboard is normal

Cause: the keyboard settings are wrong.

Solution: replace the keypad or in the CMOS (power on the DELETE key to enter the BIOS) set ADVANCE CHIIPSET FEATURES in BOOT UP NUMLOCK STATUS --- ON

11, failure phenomenon: the printer continuously print the same photo or press print after no response.

Cause: press too many print jobs.

Solution: exit the camera system, double-click the printer in the taskbar, open the file to clear the print taskbar documents can be.

12, fault phenomenon: press print, the paper does not enter the print slot, but the print head but the implementation of the print task

Cause: too much ink in the print slot.

Solution: Immediately press the feed button to stop printing, gently wipe the print slot with a paper towel, the print slot ink sucked dry.

13, failure phenomenon: shooting images can not be seen clearly, but the print out is normal

Cause: the monitor is subject to magnetic interference

Solution: If there is no problem in the confirmation of the camera adjustments, the problem remains, it may be related to the monitor, press the control button above the monitor, select "demagnetization

Solution: If the fault remains after confirming the camera adjustment, it may be related to the monitor, press the control button on the monitor and select "degaussing".

15, fault phenomenon: the photo only part of the print, and then show the lack of paper and so after a few sheets of paper, before the other part of the print out

Causes: This may be the case of the driver or hardware instability caused.

Solution: Check the print driver, or replace the USB cable with a parallel port cable, this situation may also be caused by the customer's misuse of the print job, resulting in non-stop paper or print out the garbled, the solution is to turn off the computer and the printer, and then turn on the printer, and then turn on the computer, the previous print job to clear all.

Computer troubleshooting

29, the computer can not automatically shut down the elimination method.

Sometimes we shut down the computer, click on the shutdown system, choose to shut down the computer or right-click to shut down the computer, the machine does run shutdown, but not for a while the machine and then automatically reboot. Off and on, on and off, the computer will never shut down. I have encountered this phenomenon once, and then in the large site and read many postings for help, I also asked for help to those friends who have posted to help them solve this troubleshooting. In fact, to troubleshoot this is very simple, the method is to modify the registry to solve:

Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\control\Shutdown sub-item, in the right window, create a new "String Value", named "String Value", and then "String Value". "in the right window, create a new "string value", named "FastReboot", at the same time will be "numerical data" set to 0 can be.

30, the computer display fuzzy elimination.

My computer for quite some time, at the beginning of the screen font display is still relatively clear, running for some time after the font is increasingly fuzzy, running longer some of its fonts are almost unrecognizable. Do it yourself and find the problem on the monitor. Elimination method is: open the back cover of the monitor, find the back of the monitor flat row of two potentiometers (i.e., focus and contrast), with a miniature one-word solution to the knife to adjust, you will find that the screen font with the solution to the knife will become clearer and clearer, until satisfied. However, troubleshooting this fault need to pay attention to four points: First, the new monitor focus and contrast in the front panel, the old in the rear panel; second is to adjust the need for electric operation, be very careful to prevent the display of high pressure injury; Third, sometimes the fault is not necessarily out of the potentiometer, or too much internal dust accumulation, resulting in poor circuit contact; Fourth, the display of internal components aging, the product life cycle has passed.

31, power on after the emergence of shutdown troubleshooting.

When booting into the system, the computer again appeared "you can now safely shut down". This failure phenomenon is generally out of the system file VMM32.VXD damage or can not be found on the troubleshooting method is: into the DOS environment, from other computers to copy a VMM32.VXD file to the Windows system directory, reboot the fault is eliminated.

32, the computer runs slower troubleshooting.

Sometimes computers are upgraded, but the system runs slower and slower, as if the computer is being controlled from afar. In fact, this problem is a variety of auto-loading of small programs in the blame, we can depending on the circumstances to choose some of the auto-loading of small programs to run the computer. The method is to click on "Start \ Programs \ Accessories \ System Tools \ System Information", in the system information, click on "Tools \ System Configuration Utility" can be completed to regulate the purpose.

33, the computer startup time longer troubleshooting.

The computer startup is sometimes really long, long, long, let people wait really impatient. Analyze the main reasons are: First, too many self-starting options, greatly affecting the startup speed of the system; Second, the disk is a bad road also affects the startup speed of the system; Third, the computer is infected with viruses will also affect the startup speed of the system. Elimination methods: First, check Autoexec.bat file, to see if there is a more time-consuming DOS program command line, if so, according to the required trade-offs; second is to check the Win.ini, System.ini and registry startup options, also according to the required trade-offs; third is to check the computer is not infected with viruses, such as the exclusion of the fourth is to check whether there is a failure of the disk. The method is a comprehensive scan of the disk, check whether the hard disk has bad sectors; then defragmentation of the disk to eliminate disk fragmentation; and finally run a disk cleanup program to remove junk files to free up disk space. At this point, generally troubleshooting.

34, computer shutdown time is too long troubleshooting.

In the implementation of the "shut down the system/shut down the computer" command, the computer long stopped in the "is shutting down" screen. The reason for this failure is more, such as shutting down the system function corresponding to the sound file corruption, fast shutdown function there is a conflict, power management function there is a conflict and so on. Solution: First, use the "Sound" option in the "Control Panel" to cancel the sound file corresponding to "Shutdown System". Restart to see if it is the problem; Second, start Windoes98 system configuration program, click "Start / Programs / Accessories / System Tools / Department of Information / Tools / System Configuration Program" click "General" tab in the "Advanced" button. Click the "Advanced" button in the "General" tab to open the "Advanced Troubleshooting Settings" dialog box, check the "Disable Fast Shutdown" option to cancel the system's fast shutdown function. Reboot to see if it's a problem; Third, press Win+<Break> key combination, open the "System Properties" device box, in the "Device Manager" tab to expand the "System Devices" branch, double-click the "System Devices" branch, and then click the "Advanced Troubleshooting Settings" dialog box. "branch of the Device Manager tab, double-click the "Advanced Power Management Support" item, open the "Advanced Power Management Support Properties" settings box, check the "General" tab of the Check the "Disable in this hardware profile" option in the "General" tab to disable the advanced power management function. After a reboot, the problem is usually solved.

35, by the CPU overclocking caused by the computer blue screen troubleshooting.

Computer blue screen is generally in the summer to, the reason is caused by the CPU overclocking. CPU in the RAM access to data was faster than the speed of RAM and hard disk exchanges, overclocking to make this contradiction is more prominent, and at the same time due to the temperature, the composition of the CPU and other electronic components such as the indicators of the material parameters have also undergone subtle changes, exacerbated by the need to find the data in RAM or virtual memory. The situation of the data, so that the limbs of the "abnormal error", must be low frequency, so that the CPU works in the normal frequency specified, and at the same time, use "cooling" software, clean the CPU fan, and so on.

36, hard disk space is too small or too much debris caused by the blue screen failure.

The elimination method every once in a while to carry out a disk defragmentation, at the same time pay attention to maintain the size of the hard disk space, to ensure that a certain amount of reserved, to prevent the generation of blue screen failure.

37, too many startup programs lead to blue screen failure.

Windows98 use to open more than one program window, a sudden blue screen. Solution generally do not make the system resources less than 60%, more than do not start a new program, open a new window, in case of blue screen, restart the system will return to normal.

38, components and system conflicts lead to blue screen failure.

Frequently encountered due to the sound card or graphics card settings conflict, resulting in a blue screen; other equipment interruptions, DMA or port conflict, resulting in a few drivers to produce abnormalities. The former is usually adjusted in "safe mode"; the latter is usually adjusted in the registry.

39, registry errors lead to blue screen failure.

The registry as long as there is a small problem, may lead to computer failure occurs, there will be a blue screen, and may even cause a system crash. Therefore, when installing new software and other operations that are expected to cause changes, the registry should be backed up. Of course, hardware incompatibility, improper BIOS settings and other aspects may also lead to a blue screen.

40, hard disk bad sectors of the troubleshooting.

Hard disk bad channel is divided into logical and physical bad channel two. The former is caused by improper use or operation of software; the latter is the hard disk tracks produced on the physical damage. Solution: For logical bad sectors, click "Start / Programs / Accessories / System Tools / Disk Scanner", the hard disk to implement a complete scan, so that it automatically corrects the bad sectors. If you can not enter Windows, start the computer with a startup disk, in A:\> type Scandisk C after the hard disk to scan and repair. If not, you can do a low-level formatting of the hard disk, and if you can do it properly, the bad sectors should be repaired.

For physical bad channel, you can scan the hard disk, such as the existence of bad channel, the program will be marked in red on a black background "B", record the location of the bad channel, exit the scanning program, type partition command, the bad channel will be divided into a separate area, complete all the partition, the bad channel will be deleted, activate the main partition, exit and restart! You can do it. The only way to do this is to have a temporary transition.

Computer troubleshooting methods

1) Unplugging method.

The unplugging method is one of the most common methods of computer troubleshooting. Specific operation is a faulty computer shutdown after pulling out a plug-in board and then boot, if the fault remains, then plug back into the plug-in board, repeat the above steps. Once pulled out of a plug-in board after the disappearance of the fault, that is, the point of failure in the plug-in board. The advantage of this method is that it can quickly find out the point of failure, the disadvantage is that some of the faults such as the display of characters is not normal can not be used (because there is only a graphics card, can not be plugged). A common example is memory block failure.

(2) Replacement method

Replacement method is also one of the most commonly used method of troubleshooting. In can't use the "unplugging method" to find the fault, can use the "replacement method" to troubleshoot. This method is a good plug-in board for the suspicious plug-in board, if the fault disappears, the original plug-in card is indeed a problem, the advantages of this method is convenient and reliable, especially for large-scale integrated circuit chips (such as CPU); the disadvantage is that it is difficult for the general user to have a large number of spare parts, so in the computer repair department of this method is often used.

(3) knock method

Machine running good or bad may be false soldering or poor contact or metal oxidation resistance increases, etc., for this case you can use the knock method to check. For example, some components of the pins are not welded, and sometimes can be contacted, sometimes contact is not on, resulting in good and bad machine. By knocking the plug-in board after making a complete contact failure, and then check it will be easy to find.

(4) direct observation method

With the hand mold, eyes, nose, nose, ears and other methods for auxiliary inspection, the normal temperature of the general component heating (refers to the temperature of the component shell) does not exceed 40 ℃ ~ 50 ℃, finger touch up to have a little bit of temperature, large components to touch a little bit of heat, but not hot. If the finger mold components hot, the degree of components may be internal short-circuit or heat dissipation can not be, and heat, should be replaced or change the components of the heat dissipation device. For the circuit board, sometimes we need to look carefully to see if there are broken wires, solder pieces, debris and false soldering. The component should be replaced if it is burnt, cracked, or if the color of the component's handwriting turns yellow. General machine inside a chip burned out will emit a foul odor, at this time should be immediately shut down the machine to check, should not be charged to use. Ear to listen to generally listen to the sound, especially the drive should listen carefully. If you listen to different from the normal sound should be immediately overhauled. For example, after the drive is started, if there is a crash sound, indicating that there is no zero channel. In addition, there are several methods just on the power supply part of the no longer say more. Because now the power supply is rarely to repair their own, there is a seal affixed.

Eight, will BIOS settings easy to solve computer problems

BIOS is the "Basic Input and Output System" (Basic Input and Output System) of the English acronym, BIOS is actually the motherboard designer to enable the motherboard can be correctly managed and control the computer hardware system and the management of the pre-set program. Consider the user in the assembly or use of computers may need to adjust some of the parameters of the hardware as well as the mode of operation, so the manufacturer in the BIOS chip is specially set up a piece of SRAM (static memory), and equipped with a battery to save these data may often need to be changed, due to the use of SRAM production of the traditional CMOS semiconductor technology, so people are also accustomed to call it CMOS, and the The BIOS setup is referred to as CMOS setup, and is in fact displayed as "CMOS Setup" on the main BIOS setup menu.

BIOS Setup and BIOS Upgrade are not the same thing, BIOS Setup is when you enter the BIOS setup menu and change some of the hardware control parameters or operating modes, while BIOS Upgrade is when you use a special utility program to upgrade the version of the BIOS program. upgrade operation errors and completely paralyze the computer.

One, how to enter the BIOS setup menu

At present, three types of BIOS are commonly used in computers, in which various types of motherboards and most of the domestic brands sold on the market use Award BIOS (developed by the American Award Company) or AMI BIOS (developed by the U.S. company AMI), and the other is the commonly used in foreign brand-name machines. Phoenix BIOS (developed by the U.S. Phoenix Corporation).

The computer is powered on first by the BIOS to detect the hardware system, but also on-screen prompts to enter the BIOS setup of the main menu, such as the use of Award BIOS computer in the startup will be displayed at the bottom of the screen, "Press DEL to enter SETUP, ESC to Skip Memory test" (Press DEL key for CMOS setup). Press DEL to enter SETUP, ESC to skip Memory test" (Press Del to enter CMOS setup, ESC to skip Memory test), while computers using AMI BIOS will prompt "Hit if you want to run setup" at the top of the screen when booting. So for computers using Award BIOS and AMI BIOS, we can immediately press the "DEL" key to enter the BIOS setup menu when the above prompt appears during the boot process (it won't buy if you move slowly!). (It won't buy it if you are slow). The Phoenix BIOS machine will also prompt the user to press the "F2" key to enter the setup menu during startup. As for some other brands of machines used by the BIOS can also be in the computer startup attention to watch the screen prompts to press the appropriate key to enter the setup menu.

Second, how to select the project and change the parameters

When we enter the BIOS setup menu, regardless of which BIOS will be in the menu in a specific position to display the selection of the project and change the parameters of the operation, in addition to entering the specific project setup menu, in addition to displaying the specific settings for the user to select the parameter, but also will provide the user with a choice of two optional Factory preset setting selection items. Users can use the cursor keys to make item selections, and use the page turn keys Page Up and Page Down to modify parameters, but use the F7 and F8 keys to change parameters on computers using Phoenix BIOS.

Additionally, some of the main items in the Award and AMI BIOS setups may prompt the user to use the F6 and F7 keys to bring up the factory preset parameters, respectively, or to use the F5 key to revert to the changed BIOS settings after using the factory preset parameters. Therefore, if you are a beginner, you can use the F6 or F7 key to bring up the factory preset parameters after entering the specific setup menu, and then proceed to the specific setup according to your own needs and understanding of the various setup items, and keep the factory preset values for the time being for the items that you are not familiar with.

Three, how to save the BIOS setup results

After the BIOS setup is finished, you can go back to the main menu and select "Save & Exit Setup" or "Save Setting and Exit" to exit the BIOS setup, or you can directly press F10 in the main menu location to save the disk and exit.


Onboard Power and Reset buttons are accompanied by a LED Debug Display that allows users to easily setup and resume Windows^? 7 is a free download from the LED Debug Display. The BIOS setup menu for both Award BIOS and AMI BIOS is similar to the BIOS setup menu in terms of the types of items and the purpose of the items, but the names of the items that may be used are different.

Because of the simpler setup of the Function items, we will first introduce the setup and application of the Function items as an example, and then briefly introduce the main contents and their settings in the six general setup items, which are introduced in the following sections, using the newer version of Award BIOS as an example.

It's a good thing that the BIOS main menu has a password setting and language setting function.

The password setting and language setting function of the BIOS main menu is the simplest setting item, in which the super user's password privilege is higher than the user-level password, which is reflected in the fact that the user using the "super password" can not only start the computer normally to run all kinds of software, but also enter the BIOS setup menu to modify the part of the project, including directly modifying or withdrawing the password, and then enter the BIOS setup menu to change the password. Modifications, including direct modification or revocation by ordinary users have been set up by the "user password", while the use of "user password" users can normally start the computer to run various types of software, but also be able to enter the BIOS setup menu to browse, but can not change the settings. The language setting function determines whether the main menu of the BIOS setup is displayed in Chinese or English.

1. How to set up two kinds of passwords

"Super Password" and "User Password" can be set at the same time, and can be set to different passwords, or only one of them can be set. Supervisor Password" or "Set User Password" and then enter, when a password entry box is displayed (which prompts "Enter Password:"), enter the pre-written 3 to 8-digit password, at this time, the characters entered will be replaced by the "*" sign, enter the password and enter the password will be prompted to retype the password that has just been entered once to confirm, enter the password again! once to confirm, re-enter the password after the prompt box disappears;

Note: the best password to use only 26 English characters and 0 to 9 numbers, and do not use other symbols, because some BIOS in your mixed use of punctuation and other symbols to enter the password does not report an error, but when the user to save the disk to exit and then use the password to power on the machine or try to re-enter the BIOS setup menu is prompted as an invalid password, resulting in the user having to open the machine, the user will be able to use the password to enter the BIOS setup menu. This means that the user has to open the case and discharge the CMOS to cancel the password!

The fifth step, select the main menu "Save & Exit Setup" or directly press the "F10" key, in the screen appeared "Save to CMOS and EXIT (Y / N)?N" prompted to press the Y key to exit the BIOS setup menu, the password entered into force. Operation Difficulty: Not too difficult, follow me? Ease of Understanding: There are quite a few terms, :-(, I have to write them down first? Dangerousness: Dangerous, improper settings may Down machine yo? Standard CMOS Setup

The most important thing is to set the type of hard disk. You can set the system date, time, hard disk and floppy disk specifications and the type of graphics card. The hard disk "TYPE" can be set to both "AUTO" and "USER" types. If set to "AUTO", the computer will automatically detect the IDE interface at startup, so after detecting the CPU and memory in turn at startup, the screen will prompt line by line: Detecting IDE Primary Master ...Quantum EX6.4AT, Detecting IDE Primary Slav...[Press F4 to Skip] and so on, although we can skip the detection by pressing the F4 key, but still need to consume a certain amount of time to skip the detection, so this detection will affect the speed of the computer startup, if we set it to the "USER" mode, the computer will not be hard disk parameter detection at startup, the screen will also no longer show the BIOS detection of IDE. If we set it to "USER" mode, the computer will not detect the hard disk parameters during startup, and the screen will no longer show the status of the IDE interface detected by the BIOS, so the computer can boot into the operating system quickly.

##1 BIOS Features Setup? The most important thing is to set the boot sequence of the computer. The main features that can be set are Anti-Virus Protection, which prioritizes the boot sequence of your PC from floppy, hard drive or CD-ROM. If the hard drive antivirus function is set to "Enable", there will be an alarm during the installation of the operating system (e.g. DOS or Windows 9x, etc.), and some software may not be able to continue, so it is best to disable this function temporarily when installing the operating system.

In the BIOS feature settings, some only need to select "Disabled" or "Enabled", some have more options, such as boot sequence (Boot Sequence) in the settings there are a variety of choices, such as "A, C, SCSI", "C, A, SCSI", "CDROM, C, A" and "LS / ZIP, C" and so on. In addition, you can set whether the computer is to be booted from floppy drive A, hard disk C, or optical drive CDROM, etc. In short, the position of the symbols (from left to right) determines the priority of booting the computer.

##1 Automatically detecting hard disk parameters? Want to know how big your hard drive really is? In both Award and AMI BIOS, there is a function to automatically detect and set the parameters of the hard drive. For example, in Award BIOS, there is an "IDE HDD AUTO DETECTION" item, and in AMI BIOS, there is an "Auto-Detect Hard Disks" item. Manufacturer's preset items? In both Award and AMI BIOS main menu, the manufacturer has one or two preset items, such as "Load BIOS SETUP" and "LOAD PERFORMANCE DEFAULTS", or "Load Fail-Safe Defaults" and "Load Optimized Defaults"; if there is only one preset item in the BIOS main menu, you can use it to set the factory defaults. If there is only one preset item in the BIOS main menu, it is usually "Load setup Defaults". The "Load BIOS SETUP" and "Load setup Defaults" setup parameters are set to more conservative specifications. The purpose of the manufacturer's pre-set items is to allow the user to boot up the system when powering up the system after the first installation, or to boot the system to find the cause of the problem when encountering malfunctions (e.g., unexplained crashes, frequent protective errors, etc.)." LOAD PERformACE DEFAULTS" and "Load Optimized Defaults" item is set by the manufacturer according to the computer hardware system optimization parameters set, if the user installs the use of hardware does not have compatibility problems, then you can directly from the main menu into this type of preset items, and then adjusted according to the actual operating state of the computer to make it The BIOS settings can be adjusted according to the actual running status of the computer to achieve the optimal state. The other BIOS settings are for your reference.

Nine, boot black screen of the general solution

One, if there is no power supply to check the PC power supply power supply interface and power cord power situation

1. If the interface and power cord is broken and fractured should be replaced in a timely manner.

2. Check the motherboard power cord socket. If it is not broken, pull out the socket and insert it again. Generally, it can be solved, due to the poor contact of the motherboard leads to the situation of no power.

3 check the chassis power supply, we generally utilize the alternative method of detection. That is, the power supply box mounted on another computer, try. Foreign people have introduced another way to test whether the ATX power supply is working properly, first check the external switch on the power supply box to see whether it is on the OFF gear. Then switch it to 115V, so that the power cord on the power box, there is electricity. Secondly, prepare a 6-7 cm power cord, and again connect the power cord to the power cord socket, and at the same time check the power cords of the hard disk, CPU fan, and optical drive. Whether they are connected or not. Then, if there is a secondary switch on the back of the power box, turn it on if there is. Finally, check the power supply fan. If there is a problem with the case power supply. The case power supply fan will not turn.

4. Check the switch on the chassis power supply to see if it is properly connected to the motherboard. Check the jumpers on the motherboard, find the jumper that controls the power supply, try to shorten the jumper pin, if the motherboard can operate normally, this means that the jumper has a problem. This is mainly due to poor contact between the jumper pin and the jumper cap. Shortening the jumper pin can make the two fully coupled.

Also during operation, be careful not to let the motherboard touch the metal chassis. Generally we take the motherboard and power supply out of the chassis and place it on a bad conductor. Such as wooden desktop, etc., if there is static electricity conduction, it is easy to cause the motherboard short circuit. So we have to pay special attention to this point.

Second, the power display but still black screen processing skills

1. Check all the cards, graphics cards, sound cards, etc., CPU, memory sticks are installed in place, whether the contact is good, the more stupid way, is to pull them out, and then re-inserted. Check all the interface card and interface contact is good. The advantage of dealing with a black screen in this way is that, one by one to eliminate the problem, rather than kill a thousand, not to miss one is to check the purpose of the problem.

2. If the problem is too serious, you'll have to use the most brutal trick of all, unplugging all the minor original components. Disconnect all secondary power cords, including devices like IDE floppy drives. All you need is the most basic initial boot, self-test screen memory data. Motherboard, CPU, RAM, video card, etc. If the self-test passes. Add the other components item by item, self-testing once you add one. If the self-test can not pass, you have found the problem, is not installed correctly or incompatible and other issues will be solved.

Ten, three boot black screen failure

Three boot black screen failure, now will handle the method of categorization written so that we encounter similar problems have reference.

Memory problems

Memory is one of the most important parts of the computer. The system is able to detect whether the memory and other key hardware exists and works properly during the power-up self-test. If there is a problem or it does not work properly, the system will use the speaker to alert you. Different sounds from the speaker indicate different faults. For example, if the memory is faulty, the speaker sounds like "beep beep beep".

A brand-name machine with a PII300 CPU, 32M RAM, 4.3G hard disk, and WIN98SE operating system was turned on, and the speaker made a "tic-tac-toe" sound and the display went black. Obviously, there is a problem with the memory. Open the chassis, unplug the memory, look carefully, there is no problem with the memory. The memory stick was inserted into a different slot, and everything was fine.

Video card does not work properly If the video card does not work properly, the computer will also be black. However, the system will not alert you with a small speaker at this time. A computer has been used for a year, has been working normally, but since recently, the computer has a black screen failure. After the computer is turned on, the system self-test is normal, and the trumpet does not alarm. But the screen shows "No Sign a ls". Accordingly, the initial judgment is that the graphics card has a problem. After removing the graphics card, found that the graphics card is full of dust, the first brush to brush the graphics card clean, and then rubber to the "gold finger" sanding again. The first thing I did was to put the card in and turn it on, and it worked fine.

This problem is generally due to the long time, the card's "gold finger" part of the oxidation and poor contact with the slot caused by. It is characterized by a normal system self-test, the trumpet does not alarm, the monitor black screen (older monitors) or display "No Sig-n a ls" (newer monitors). The way to deal with this kind of failure is to check whether the graphics card has poor contact or whether there is any foreign matter in the slot that affects the contact.

Motherboard BIOS Failure

An assembled machine, PIII550, 64M, 6.4G, 15-inch monitor, WIN98SE. after booting up, the black screen, but the speaker does not alarm. Through checking, found that the video card is not a problem. Since it is an assembled computer, it was suspected that the power supply power is not enough, unplug the hard disk, CD-ROM drive, sound card, and use the smallest system