The host is normal, the display screen is white, and the computer monitor is white

Hello. The display has a white screen, mainly because the display signal is not input to the screen, and the backlight is on, so it looks like a white screen.

The main reasons are:

1 The screen cable connected to the screen by the monitor driver board is loose.

2. The power supply circuit for the screen signal on the display driver board is abnormal (as long as the screen cable on the driver board is not 5V, if not, this is the reason).

If it is the second type, it may be that a part on the drive board is broken, just replace it, and it doesn't cost much to repair.

If you rule out the above two possibilities, it means that there is a problem with the circuit on the screen, and it will be a little troublesome.

One of my Great Wall 22-inch LCD monitors with a white screen, because the warranty period has passed, the price of external repair is 200 yuan. I was ruthless and found the materials to repair by myself. When I turned on the monitor, I found that there were two circuit boards.

One is the driver board, which has nothing unusual in appearance. The other is the power supply version, and it was found that there was an electrolytic capacitor on the board with the tip bulging upward, which was suspected to be the fault caused by it. I went to the electronic component store and bought the same capacitor (1000mf 16V, 2 yuan).

Come back and use an electric soldering iron to solder the original components and replace them. Power on, and the monitor recovers the image. After the repair, it has been more than 8 months, and the display is no longer white.

Remove the graphics card and wipe it.

What's going on with a white screen on a computer.

1. The internal problems of the display mainly include: LCD panel drive circuit problems, LCD panel power supply circuit problems, screen wire contact problems, motherboard control circuit problems and other problems.

Since the LCD display screen is white after turning on, it means that the backlight and high-voltage generation circuit are working normally, but the LCD panel does not get the driving signal. If the screen disappears after the laptop is turned off, and then the screen is white again, it may be caused by a problem with the power strip.

3. Since the switching signal emitted by the motherboard microprocessor is generally controlled by several transistors, the fault may be that the triode that controls the switching signal is damaged.

Hello, according to your problem, we will sort out the following relevant information for you: 1. Poor contact or failure of the graphics card will cause a white screen on the computer, check the graphics card or replace it with a new graphics card. 2. In addition, the loose memory module will also cause a white screen on the computer, at this time, you can pull out the memory module, clean the slot and memory module, and then reinsert it. 3. The white screen of the computer may also be caused by poor contact of the ** line, and you can change to a new ** line.

Summary. Pro,The white screen of the desktop computer is that the slot of the graphics card and the motherboard is not fully contacted,Cause the white screen phenomenon,Just turn off the power,Open the chassis,Take out the graphics card,Use the eraser to align the gold finger on it a few times,Then reinstall it back,Sometimes deal with it like this,Just turn it on again。

Hello, dear, very happy for your problem, the white screen of the desktop computer is a problem with the display screen or a problem with the host? to help you find the host problem. The white screen of desktop computers is due to poor heat dissipation, excessive dust in the machine, poor contact, loose memory modules, etc.

Hope mine can help you with Bicha pants. Wishing you good health and a happy mood!

Pro,The white screen of the desktop computer is that the slot of the graphics card and the motherboard are not fully contacted,Resulting in the phenomenon of a late white screen,Just turn off the power,Open the chassis,Take out the graphics card,Use the stupid rolling eraser to wipe it with the gold finger a few times,Then reinstall it back,Sometimes deal with it like this,Just reboot it。