What happens when the computer sometimes appears white when it is turned on?

The white screen is our term in the maintenance industry, the boot light can be lit, the screen is blank and the boot screen is not displayed, but the sound of entering windows can be heard.

Cause of the failure that caused the white screen:

One. Graphics card failure. It could be a driver issue, or a problem with the graphics card itself.

Two. Connection failure. It's a matter of the connection between the graphics card and the display.

This kind of fault occurs from time to time on laptops, and the connection is broken or short-circuited, causing the display signal to be abnormal. However, it is less common on desktops because the desktop is connected thick and strong. They don't move much.

So there is very little damage.

Three. The display itself is faulty. It is not uncommon for the main chip that controls the screen to be damaged.

Then there is the fault of the signal processing circuit.

The white screen when turned on, or the people who use the computer understand the meaning of this "white screen", but there are also a few people who use the computer who do not know enough about the white screen. Is it a quality problem with the screen or a damaged graphics card? Will it occur if the LCD screen is not in good contact with the motherboard cable frequently?

Why do some laptops occasionally have white screens? How can you determine the meaning of a white screen?

With these questions, the author will give a detailed answer to the meaning of the white screen and the ** that produces the white screen. First of all, the white screen is our term in the maintenance industry, the boot light can be lit, the screen is blank and the boot screen is not displayed, but the sound of entering windows can be heard.

In the process of use, you need to know how to count as a white screen, whether the white screen is connected to the graphics card, as long as the computer and PC monitor are connected to the boot to see if the display is normal (generally there is a port for an external PC monitor behind the computer). If the PC monitor display and the laptop screen display are both white, then the possibility of damage to the graphics card is relatively high. The graphics card of the laptop is divided into two sets of synchronous signal output, one for the LCD screen and the other for the display port, so the best test method for whether it is connected to the graphics card is to connect it to the PC monitor.

No, it's a problem with your graphics card, you go to the official ** next latest driver first, install it, and it should be fine.

Also, whether yours is Vista or XP Vista compatibility is not very good, also pay attention to driver issues.

Problems with the monitor, take it and check it.

The internal problems of the display mainly include the problems of the LCD panel drive circuit, the LCD panel power supply circuit, the poor contact of the screen cable, and the problems of the motherboard control circuit.

If the screen disappears after the laptop is turned off and the screen is white again, it may be caused by a problem with the power strip. The white screen of the display may also be the poor or damaged contact of the graphics card or ** line, etc., because the switching signal sent by the motherboard microprocessor generally has to be controlled by several transistors, so the fault may be the triode that controls the switching signal is damaged.

Precautions for computer repair

In the process of reproducing fault phenomena and judging maintenance, the expansion of the scope of faults should be avoided. If the output voltage of the DC-DC voltage conversion circuit is normal, there are damaged capacitors and other components between the output end of the DC-DC voltage conversion circuit and the screen cable interface, and the damaged components can be checked and replaced.

It should be noted that if the power supply voltage of the screen cable interface is normal, then check whether the timing signal and drive signal in the LCD panel drive circuit are normal. If it is abnormal, check the output signal, input signal and power supply voltage of the chip that generates this signal respectively to determine whether the driver chip is damaged. If it is damaged, it can be replaced.

Computer: Product name: ASUS.

Product model: ASUSU4700I

System version: Windows 10

Software version: null

1.Poor or faulty graphics card contact will cause a white screen on the computer, just check the graphics card or replace it with a new one.

2.Loose memory modules will also cause a white screen on the computer, so you can pull out the memory module, clean the slot, clean the memory module, and then plug it back in.

4.Problems with the LCD panel drive circuit and LCD panel power supply circuit will cause the computer to be white, and we need to take it to a professional maintenance point for repair.

Summary. 1.Poor or faulty graphics card contact can cause a white screen on your computer.

2.Loose memory modules can also cause a white screen on your computer.

4.Problems with the LCD panel driver circuit.