The computer screen flashes black.

There are generally two kinds of display flicker, one is black screen flicker, and the other is flower screen flicker, which is similar to the screen distortion caused by electromagnetic waves briefly interfering with computers. Generally, we need to check the host voltage, graphics card interface, display interface and environmental interference.

The following are the reasons why the black screen flashes:

1, the display refresh rate settings do not match;

2. The graphics card driver is incorrect or too old;

3. Most computer screen flicker is caused by hardware problems, such as monitor failure and computer host failure.

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solution

1, indicating poor contact.

Solution: You remove the connector on the back of the monitor and clean it up, then try to connect it again. Be careful not to connect the connector upside down. If there is no problem with contact, it is best to try another monitor to determine whether there is a problem.

2. Poor memory contact

Solution: If there is something wrong with the memory stick, it will usually beep. If there is an alarm sound, you should open the case, take out the memory stick and clean it with anhydrous alcohol or eraser, and try to reinsert or replace the slot. Be careful not to insert the memory stick backwards.

3. Poor contact of the graphics card

You take out the video card and clean it up, and then try to connect it again. If there is no problem with the contact, it is best to find someone to borrow a graphics card to try, so as to determine whether it is a graphics card problem.

4. The floppy disk drive is not started correctly.

Sometimes improper startup of floppy drive will lead to a black screen when the computer starts or restarts. To avoid this situation, you can also cancel the floppy boot item in the BIOS, press the DEL key to boot and enter the BIOS, and then select advancedbiossetup to change it to HDD-0 or IDE-0 (if you see a floppy disk).

5. System and False Black Screen

Solution: Right-click the desktop and select Properties-Screen Saver-Set no screen or other screen saver, and set the waiting time to be longer.

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