1. Check whether the monitor cable is firmly and reliably inserted into the host interface, and then check whether the contact between the graphics card and the I/O slot of the motherboard is good. You can re-insert the graphics card to ensure that the graphics card is in place and has good contact;

2. Change a monitor that is confirmed to be normal. If the screen is no longer black, the display may be damaged;

3. If the monitor is not damaged, please check whether the CPU fan is running;

4. If the black screen still appears, you can remove all components except CPU, graphics card and memory module, and then turn on the computer. If there is something wrong with the memory, you should call the police. If it is not due to memory, please change to a normal CPU and restart. If the black screen still appears, it is recommended to replace the motherboard;

5. Are software and update patches installed in the system? If so, please uninstall the update file;

6. Restarting the computer after installing the software will lead to a black screen until the update is completed;

7. You can enter the safe mode to repair the computer. If you cannot enter Safe Mode, please reinstall the system.

The reason of computer black screen

First, the display is not well contacted.

Solution: You remove the interface behind the monitor and clean it up, and then try to connect it again. Be careful not to connect the interface upside down. If there is no problem with the contact, it is better to try a different monitor to determine whether there is a problem.

Second, the memory stick has poor contact.

Solution: If there is something wrong with the memory stick, there will be a beep. If there is an alarm, open the case, take out the memory module and wipe it with anhydrous alcohol or eraser, and try to plug it in again or change the slot. Be careful not to insert the memory stick backwards.

Third, the graphics card is not well contacted.

You take out the video card and clean it up, and then try to connect 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.

Fourth, the floppy drive is not started normally.

Sometimes improper startup of floppy drive will cause the computer to boot or restart the black screen. In order to avoid this situation, you can also cancel the floppy drive boot item in the BIOS, press DEL to boot into the BIOS, and then select advancedbiossetup. If you see the floppy drive, change it to HDD-0 or IDE-0.

Fifth, the system settings lead to false black screen.

Solution: Right-click the desktop and select Properties-Screen Saver-Do not set the screen or other screen savers, and set the waiting time to be longer.

Sixth, the display is not set properly.

Solution: Sometimes the monitor can't stand the high resolution of the graphics card. Adjust the brightness button of the display.

Seventh, the new driver is not added properly.

If a new driver with newly installed hardware has a black screen failure, please enter safe mode to uninstall or disable the new driver.

How to enter "Safe Mode" 1: Press F8 key quickly to select "Safe Mode" when starting the machine.

Enter "Safe Mode Method 2:

1, Start-Run-Enter msconfig-OK-Click the "Boot.ini" tab.

2. Select "/safenoot"; Third, click OK to save and exit to restart the computer.

3. Select "Safe Mode" from the WindowsXP advanced options menu that appears after restarting.

4. If you want to cancel the "Advanced Options Menu", repeat the above steps, except that "/SAFENOOT" is deselected in step 2.

Eight, improper addition of new hardware

Solution: Check whether the new hardware is plugged in firmly, unplug it, try another slot and install the latest driver. If this is not the case, or if it is, you can first use the usual black screen solution: press F8 key quickly when starting the computer, and the menu of advanced startup options will appear, and then select "Last Correct Configuration" to start the computer.

reference data

Baidu:/item/%E7% 94% B5% E8% 84% 91%e9% bb% 91%E5% b1%8f/7293777? Fr = Aladdin