How to fix a black screen on a computer, how to fix a black screen on a computer?

A black screen on your computer is a common fault in your daily life, and if you encounter a black screen, there may be several possibilities:

1. The computer parts are not properly installed.

If you find that the computer screen is black, be sure to check whether the computer parts are properly inserted, whether they are connected to the host interface, and check whether the contact between the graphics card and the computer IO slot is good. If it is not plugged in, check it again to make sure it is checked before turning it on.

Second, the display may be damaged.

If both the monitor and the graphics card are installed, then give it a try if you suspect that the monitor is too good, if the screen does not go black when turned on, the monitor may be damaged.

3. Check whether the computer fan is running, if it is running, use the universal meter to measure whether the voltage output is normal and shows plus or minus 12 volts, plus or minus 15 volts, if it is not normal, you can change a power supply to try.

4. Detect CPU, graphics card, and memory module.

If the screen still goes black, you can remove all components except the CPU, graphics card, and memory sticks, and then power on the computer. If there is a memory fault, there should be an alarm sound, if it is not the memory reason, please change to a normal CPU, boot the computer and re-test. If you still see a black screen, the problem should be on the motherboard.

Fifth, the computer black screen we can press the F8 key when booting up, enter the system operation option to recover, you can click "the last correct configuration" or enter the safe mode, and click "restore my computer to an earlier time" according to the steps, if not, you need to reinstall the system. If the computer screen is black, we can restart the computer and keep clicking the F8 key on the keyboard when turning on the computer, then we will enter the system operation options, find the "last correct configuration", and restart the computer, and the computer will return to the state when it was last turned on. Or also enter the system operation option, click "Safe Mode", it means that there is no major problem with the computer if you can successfully enter, and then click Start - All Programs - Accessories - System Tools - System Restore, at this time a selection interface will pop up, click "Restore my computer to an earlier time".

If the above methods have no effect, then it may be that there is a problem with the system, you need to reinstall the system, you can go to the online ** system for installation, you can also go to the repair shop to find a professional master to install, after the system is done, the computer will be restored.

The computer often turns on the screen suddenly and does not turn on.

Method:

1. If the monitor is powered on but there is no signal, turn off the power and turn on the chassis, replug and unplug the memory stick, and wipe the gold finger with an eraser (the back of the thumb fingernail is also fine) in one direction, and then turn on the machine after installation.

2. If the above operations are invalid, turn off the power and open the chassis, reinsert the graphics card, and plug in the data cable between the monitor and the graphics card. If it still doesn't work, consider the graphics card damaged, then replace it with a new one.

3. If the host can be displayed when connected to other monitors or the display of this machine is connected to other normal hosts and still cannot be displayed, it means that the display is damaged and needs to be repaired.

There are generally four cases of computer black screen failure:

1.All black. The main unit and display (including the indicator light) are not lit.

2.Light.

The indicator light of the monitor is on, but the indicator of the host unit is not.

3.The display does not display.

The display and the main unit are both on, and the switching power cooling fan is also rotating normally, but the display is not displayed.

4.Dynamic black screen.

Dynamic black screen, displayed when turned on, but not after a while.