What should I do if the computer screen can t be turned on 10

When we usually use the computer, sometimes the host of the computer cannot be turned on, and the power light of the host is not on, which leads to many reasons for the failure, and the specific inspection methods are as follows:

1. When there is a problem that the machine cannot be turned on, we can first adopt the method of discharging static electricity. The specific operation method is to turn off the power supply of the host first, and then press the power switch of the host several times;

2. If the above method doesn't work, we can also try to open the host panel. Before operating, disconnect the main unit from power. Find a button-sized thing on the motherboard, it is the [BIOS] battery.

There is usually a spring for fixing on the outer ring of the battery, and the battery can be removed by pressing and holding;

3. Manually deduct the [BIOS] battery from the motherboard, and put it back in a few minutes. After restoring the [BIOS] battery, connect the main unit to the power supply and see if it can be turned on normally;

4. Remove the memory module from the motherboard, and then turn it on again to see if the host will beep and alarm. If there is, then there must be a memory problem;

5. After the memory module is removed, you can wipe the gold finger with an eraser, and then put it into the motherboard. If everything is normal, you should be able to start the console normally at this time and see the boot screen;

6. When the above two methods do not work, we can also use the minimization method to test. What is a minimization test? It is to remove all the other ports on the motherboard, leaving only the CPU, memory and power supply, and see if it can be turned on normally.

Of course, when dialing the interface cable on the motherboard, please remember where it is located to avoid plugging it incorrectly when restoring. Generally, we can remove the optical drive, hard disk, and graphics card;

7. When using the computer, sometimes you will encounter a hard disk failure, resulting in a failure to boot normally. At this time, you can see the boot screen, but the computer stays on the self-test interface. If the problem with your hard drive is severe, you'll also hear a sound from your hard drive.

If this is the case, just remove the hard drive and the computer will immediately return to normal;

If it returns to normal, it may be that the computer is dead or hibernating, considering that it is a power supply problem of the computer motherboard, you need to replace the motherboard power supply and reinstall the system. If the screen is still black, the power supply is considered damaged and needs to be repaired.

In addition to the hardware reasons that cause the black screen phenomenon, there are also the following three "soft" reasons that may cause the "black screen". Let's learn from me!

1. The hardware acceleration settings are too high

Hardware acceleration can make software that processes a lot of graphics run more smoothly, but if your computer's hardware acceleration is set too high, it can lead to a "black screen" phenomenon. To resolve the "black screen" glitch, try to reduce the hardware acceleration first.

1. Click the Windows Start menu, click Control Panel, and then double-click Display.

2. Select the "Troubleshooting" tab, and under "Hardware Acceleration", gradually drag the slider from "Full" to a position close to "None".

3. Click the "OK" button.

2. Disable 3D acceleration or upgrade the graphics card driver

If Windows has configured 3D acceleration but the graphics card does not support the feature, then a "black screen" glitch may occur when running games or multi-** programs.

1. Click Start, then click Run, then type DXDIAG in the Open box and press Enter.

2. Select the "Display" tab and click the "Test Direct 3D" button under "DirectX Features" to get the correct Direct 3D functionality.

3. If there is no rotating cube on the screen, the watch card does not support 3D acceleration. At this point, click the "Disable" button after "Direct 3D Acceleration" to disable the feature.

If your graphics card does not support 3D acceleration, in addition to disabling the feature, you can contact the graphics card manufacturer to update the driver to support 3D acceleration for DirectX.

3. The driver of the graphics card is not compatible with the graphics card

The DirectX installer may incorrectly detect the graphics card and install drivers that are not working properly, so please confirm that the correct graphics card drivers are being used.

1. Click "Start", then "Control Panel", and then double-click "System".

2. Select the "Hardware" tab, click the "Device Manager" button, then click the "+" sign in front of "Display Card" or "Display Adapter", then right-click the display adapter under it, and then click the "Properties" button.

3. Select the "Driver" tab and click the "Driver Details" button to display the graphics card driver used. If you're using a driver that's not compatible with your graphics card, in the Drivers tab, click the Update Driver button, and then follow the on-screen instructions to install the driver for the new version of your graphics card.

If the logo screen does not appear after booting up, and the screen is always black, then:

1.Poor contact of memory modules. Pull out the memory module, carefully wipe the gold finger with an eraser, and clean the card slot from dust. Plug in the memory module and turn it on.

2.Disassemble the back cover or case and thoroughly clean the motherboard and fans of dust. Turn it on again.

3.There is a problem with the graphics card.

4.There is a problem with the LCD display on the screen.

Poor or faulty contact.

6.There is a problem with the motherboard.

The last 4 questions are recommended to be sent for repair.