What s going on with a black screen in the lower half of the computer desktop, antivirus is useless

Is there a problem with the display?

Whether it is caused by water ingress or bumps.

2.Software malfunction: Viruses, system updates, program installations, etc., in your computer can also cause your screen to appear half black. For example, the screen driver or the display peripheral driver is not installed correctly, the display settings are changed, etc.

3.Damaged display: Excessive smashing of the screen, dazzling tea, heavy use can cause damage to the internal components of the monitor, or violent collision of the monitor connector.

Solution:1Cable check: When this happens on the screen, you first need to check whether the cable around the screen is secure, especially the ** cable and power cord. If there is looseness or poor contact, you can replug the cable and check for visual effects.

2.Check the computer laptop: If the laptop is half black, you can also try to turn it off and unplug the power, pop the battery out, plug the battery back in and power it on again.

For desktop computers, you can reboot it to see if the screen is good again.

4.Check the monitor: If the cables have been checked and the connection status is normal, there may be a problem with the monitor itself.

You can connect your computer to a test monitor, and if the other monitor is working properly, it is a sign that the screen itself may be malfunctioning.

Check if your computer is infected with a virus, if it is infected, you can install anti-virus software and disinfect the problem, if you change the display settings, you can reset it through the "Display Screen" in the computer control panel.

Summary: These methods can solve most of the problems that appear that half of the screen is black. But if none of the above methods solve the problem, then it is likely to seek the help of a professional.

In our daily life and work, computers have become our indispensable equipment, but failures are inevitable. I hope this blog can help you solve the problem of half of the screen being black, so that you can improve your computer maintenance ability and use the computer more smoothly in the process of daily computer use.

Try a different monitor and buy a second-hand one for 100 yuan.

Replace the motherboard and connect the screen cable.

This is a loose memory module in the desktop case that causes the socks.

Tools Raw and Source:

Desktop computers. win7

1. Remove the cables from the main chassis and move them out of the main chassis.

2. Unscrew the fixing screws on the main chassis and remove the outer cover of the main chassis.

3. Break the buckle of the memory module and remove the memory module.

4. Use a tool to clean up the dust or impurities in the memory card slot, plug the memory module back on, and press the buckle firmly.

5. Resist the main engine and reinstall the main chassis to start normally.

1: White screen: The white screen is caused by the fact that the LCD screen is not working, and the liquid crystal is not deflected and covered by large light.

Causes: The power supply of the screen is cut off or the fuse on the screen is burned, the LCD on the screen is soldered or damaged, or the screen wire is plugged in.

Maintenance idea: The imaging system is abnormal and the power supply of the screen is problematic.

Maintenance method: test whether the screen and motherboard are short-circuited and whether there is power supply. In the case of power-on, test both ends of the insurance to see if the power supply is normal, if it is normal, then test whether the signal voltage on the screen interface is normal, if it is not normal, check the relevant lines, if the power supply and signal of the screen are normal, then replace the original screen with a good screen to see if it is a white screen made by the circuit damage on the original screen (generally the white screen caused by the fire on the screen or the LCD controller is burned out.

Two: Black Screen: Note:

See if it doesn't turn on or doesn't show it when it starts up (with the help of a diagnostic card). The black screen is generally caused by the virtual insertion of the screen line on the motherboard or the broken wire responsible for the power supply of the high-voltage board and the LCD screen in the screen line.

Three: dark screen: The dark screen is caused by the backlight system of the LCD screen not working properly, and the problem is in the power supply control signal of the high-voltage board, lamp tube or high-voltage board.

Maintenance method: overhaul first in the power-on state to test the power supply and control signal on the high-voltage board is normal, if not normal, check the relevant line, if it is normal, then use a good lamp plugged into the high-voltage travel board to see if it is normally lit, in order to further determine whether the high-voltage board or the lamp is broken.

If it is bad, replace the high-voltage plate and lamp.

It's because there is a virus in the computer, just install the system from the beginning, and kill the virus!