What are the common computer problems?

First, how to detect computer failures

Before teaching MM how to troubleshoot, of course, we should learn how to detect faults first. If it is a method like the computer city outside, there will usually be a Dbug card or professional software to detect the fault. This method is intuitive and problems can be found. However, it is difficult to operate Dbug card or professional test software, and it is difficult for MMs to understand the principle, so these two fastest and most direct troubleshooting methods are not suitable for MMs. So here are some simple and easy-to-understand methods, so that MM can find the root cause of the fault relatively surely.

The methods we introduced are all "primitive", so it can be said that there is no technical content, and MM should be easy to master. The first one is "looking, listening, touching and smelling", which is a very practical method, but only typical or obvious faults can be found. "Look" is to observe whether the computer has sparks, whether the power cord or data cable is loose, whether it is disconnected or bumped, and so on. These problems will cause very intuitive glitches, such as the CD-ROM drive can't start, the hard disk can't be transferred to the system, or it can't start. "Listening" means listening to the sounds made by computer accessories, including alarm sounds and strange sounds made by individual hardware, which can eliminate common problems such as loose memory and bad hard disk. "Touching" means directly touching the components on the motherboard, such as electrode tubes, capacitors, CPU fans, etc., to see if there is any looseness or frequent fever. If this problem occurs, it usually needs to be repaired and replaced. "Smell" is very simple, that is, directly smell the smell from the computer. If there is a burning smell, it proves that a part or accessory is burnt out and can be replaced directly.

The second method, which is also stupid, requires hands-on ability, that is, "exchange plugging method" "Plug-and-play method" refers to replacing an accessory with an accessory that runs normally on other machines, and detecting the accessory that causes the failure through comparison. I believe many girls have used this method, but it has its limitations. First, it is not so easy to get spare parts for normal operation of other machines, because people may not lend them to you; Second, the accessories of other machines that work normally may not be compatible with your computer, which usually happens on older computers, so the problems found may not be the real problems.

In a word, the two methods described above are both commonly used and relatively simple troubleshooting methods. MM can learn from these two methods, first find out the fault itself, so as to find out the typical or obvious fault, so as to prescribe the right medicine.

Second, what is the problem of abnormal noise at startup?

Computer soft fault is a common problem for girls. The stupidest way is to follow the system again. There are also computer hardware failures. What problems do you often encounter? The method of detecting computer faults has been described above, and now it is of course necessary for MM to deal with common computer faults.

Everyone takes their computers home during the holidays, which is a very easy cause of failure. It's a long way to go home, and it's inevitable to bump, which is easy to cause accessories to loosen or even malfunction. Old machines or moved machines, which are often modified and installed, will make some strange noises. MM will be very anxious and don't know what to do. In fact, most of these faults are relatively easy to solve. The first cause of boot screaming may be poor memory contact, which is also a common problem of moving or old machines, which is manifested by a long and short alarm constantly ringing. The solution is simple, that is, remove the memory and reinstall it once to solve the problem. If it is an old machine, you should also wipe the copper part of the memory with an eraser, because the copper part may be oxidized and cause poor contact if it is used for a long time. Note when inserting the memory stick: first, the gap of the memory stick should be aligned with the protrusion of the memory stick slot, and then press it vertically. When you hear a crisp "click" sound, the plastic bayonet of the memory stick will automatically close.

Memory is easy to oxidize.

Restock

The second place where strange noises appear may be the hard disk. When you open it, you will hear the harsh noise of "Little Chef Hippo", which may be the reason why the hard disk has bad tracks. It is also very simple to judge whether this question is true or not. XP will not include this feature in the attachment as long as you run the ScanDisk option of the system tool in the attachment. You just need to right-click the disk properties tool and you will see the error checking option. If you run it, it will have the same function as disk scanning. From the scan report, you can detect whether there are bad tracks on the hard disk. If there is a bad way, MM can only turn to experts or directly replace the hard disk.

There is also a situation that is not a fault, but it may also lead to a fault, that is, the noise of the cooling fan of the CPU or graphics card. This is mostly caused by excessive dust or poor operation of bearings. You can basically solve this problem by cleaning the dust and adding some oil to the cooling fan. If it still can't be solved, it should be that the cooling fan is "dead" and it's time to find someone to help you replace it. computer

The computer configuration is too low, such as the poor quality of memory chips and hard disks. You should remove the memory stick, clean up the gray memory on your golden finger and try again.

In addition, you use 360 and Jinshan to clean up whether there are malicious software and Trojans, and patch them; Kill them all with the latest antivirus software. I suggest you do it in safe mode!

Then you should optimize your system, which will make your system run faster! !

FAQ Masters must:

1. How to clear the page file when shutting down?

Open the control panel, click Administrative Tools → Local Security Policy → Local Policy → Security Options, double-click the "Shut Down: Clean up Virtual Memory Page Files" item, click the "Enable" option in the pop-up menu, and then click "OK".

2. How to configure Windows XP service by yourself?

If you use Windows XP on a stand-alone computer, many service components are not needed at all. Additional service programs will affect the speed of the system, so you can completely disable these additional service components. Click Start → Control Panel → Administrative Tools → Services to open the service list window. Some services have been started and some have not. We can check the description of the corresponding service items and close unnecessary services. For example, the "alarm" can be turned off if there is no LAN connection and there is no need to manage the alarm.

3. What is the function of 3.Smartdrv program?

Phenomenon: It is mentioned in many introductory articles about Windows XP installation: "If installing Windows XP under DOS is very slow, it must be that Smartdrv.exe was not running before installation. I want to ask what's wrong with this Smartdrv.exe document. How to use it?

Smartdrv.exe, this file must be very clear to friends who are familiar with DOS. Its main function is to increase the cache of reading and writing disk files. As we all know, the reading and writing speed of memory is much higher than that of disk. If memory is used as the cache of disk reading and writing, the operating efficiency of the system can be effectively improved. Smartdrv.exe's files can be found in the installation disks of various versions of Windows, or in Windows/command/ on the hard disk, with only a few tens of KB. Copy this file to the floppy disk, start the system to run this program directly (without parameters, the program will automatically allocate appropriate memory space as a cache according to the memory size), and then install Windows XP. Also remind everyone not to run this program after installing Windows, otherwise it will reduce the available memory of Windows.

4. What is the file 4.Win32k.sys?

Phenomenon: Windows XP has just been installed, and a virus was found when installing an Internet virus. The Win32k.sys file located in F:WINNT SYSTEM32 cannot be deleted or quarantined. Deleting under Windows 98 or DOS will cause Windows XP to fail to open? What is the purpose of this document? Is there any way to solve it?

This file is a Windows XP multi-user management driver file. There is a backup of this file in the X:WindowsSystem32Dllcache directory. Just copy this backup to X:WindowsSystem32 and replace the file with a virus. Make a Windows 98 startup disk and copy the Attrib.exe file to the floppy disk, which is located in the X:WindowsCommand directory on the machine with Windows 98 installed. In the advanced BIOS features of BIOS, adjust the startup sequence from disk A. After entering DOS, enter directory X:WindowsSystem32, enter Attrib -s -h -r win32k.sys, enter directory X:WindowsSystem32dllcache, enter the same command, overwrite the original file with Copywin32k.sys X: Windows System32, and then restart.

5. What does the startup menu of 5.Windows XP mean?

Phenomenon: Windows XP operating system has been installed recently. I know that if I press F8 at startup or when the computer can't start normally, I will enter the advanced options menu of Windows XP startup, where I can choose eight different modes to start Windows XP except normal startup. What do these models mean?

(1) Safe mode: When Windows XP is started in safe mode, the system only uses some basic files and drivers to start. Entering safe mode is an important step in fault diagnosis. If you can't determine the problem after starting the safe mode, or you can't start the safe mode at all, you may need to use the function of the emergency repair disk ERD to repair the system.

(2) Network security mode: It is similar to the security mode, but it adds support for network connection. This option is very useful for solving the startup failure of Windows XP in LAN environment.

(3) Security mode of command prompt: Similar to security mode, only basic files and drivers are used to start Windows XP. But after logging in, a command prompt appears on the screen instead of the Windows desktop.

(4) Enable startup log: Start Windows XP and record all drivers and services loaded by the system into a file. The file name is ntbtlog.txt, which is located in the Windir directory. This log is very useful for determining the exact cause of system startup problems.

(5) Enable VGA mode: use the basic VGA driver to start Windows XP. This mode is very useful when a new graphics card driver is installed that prevents Windows XP from starting normally, or when a failure occurs due to an incorrect refresh frequency setting. When starting Windows XP in safe mode, only the most basic graphics drivers are used.

(6) The last correct configuration: Selecting "Start Windows XP with the last correct configuration" is a way to solve the problem that the newly added driver is inconsistent with the hardware. Starting from this way, Windows XP only restores the information under the registry key HklmSystemCurrentControlSet. Any changes made in other registry keys remain unchanged.

(7) Directory service recovery mode: not applicable to Windows XP Professional. This applies to the Windows XP Server operating system and is only used to restore the Sysvol directory and the Active Directory directory service on the domain controller.

(8) Debugging mode: Start Windows XP and send debugging information to others through serial cable.