The computer turns on with a white screen, but after a while it is normal?

Someone else's answer! Hope it works for you!!

According to the preliminary status quo to judge 1, if there is an alarm sound, according to the alarm sound to judge the relevant problems 2, if there is no alarm sound, you can start normally, but after booting a certain software to run this kind of problem, you can uninstall the software and reinstall, if it still doesn't work, you can upgrade the graphics card driver, if it still doesn't work, you can try to reinstall the system. 3. If it can be turned on normally, the screen will be white as soon as it is turned on. If this is still the case, you can reinstall the system, if there is still such a problem after reinstalling the system, wipe the gold finger of the graphics card (the gold part below the graphics card), slots, etc. with alcohol and then try, if not, find after-sales testing and wish you to solve your problem as soon as possible.

I can tell you, it's a frameshift circuit problem, and there's a ghost caused by a virus, because you should have also heard of the problem of being conceived after connecting to the computer, it is recommended to repair it, don't dismantle it yourself, dismantle it yourself, and take the invoice if you don't repair it.

Hope you can give me the answer!

Let's see if there's any problem with the graphics card first.

In fact, there are many cases of this problem.

It's not that the white screen has to be repaired.

If it's not a monitor problem, then say upstairs.

It doesn't hurt you to move half to death.

Check the hardware more often.

If it's white as soon as it's turned on.

I can't even tune up the DOS.

Then you really have to think about the monitor.

LCD.

Workaround for white screen for reference.

1. The reason for the white screen of the LCD monitor:

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

Because the LCD screen is white after being turned 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 computer is shut down, and then the screen goes white again, it may be caused by a problem with the power strip.

3. From the analysis of fault phenomena, no matter whether the LCD screen is turned on or off, as long as the power supply is plugged in, the high-voltage generating circuit is always in working state, and the backlight is always lit. In other words, the high-voltage generation circuit is no longer controlled by the switch, that is, the switching signal sent by the motherboard to the high-voltage generation circuit is out of control. Due to the motherboard microprocessor.

The switching signal is usually sent through several transistors.

to control, so the fault may be a damage to the transistor that controls the switching signal.

Second, the solution and maintenance ideas of the white screen of the LCD display:

Start by ruling out whether it's a graphics card issue or a VGA cable.

If you have a road problem, you can replace a VGA cable to see if it is still a white screen. If the screen is still white, it is a problem with the computer's host, and most of the graphics cards are in poor contact or faulty, but this rarely happens. The following details the solutions to the white screen phenomenon caused by poor displays:

1. First disassemble the shell of the LCD screen, then check whether the screen cable interface is loose or not connected, check that the screen cable is connected normally, and proceed to the next step.

2. Turn on the power switch of the computer, and then use the multimeter.

Measure whether the power supply voltage of the screen cable interface is normal. If the supply voltage is normal, go to step 5; If it is not normal, then check whether the fuse resistor or fuse inductor near the output of the screen cable is open or damaged, and if there is damage, replace the damaged component.

3. If the fuse resistor or fuse inductance near the output end of the screen cable is normal, then check whether the output voltage of the DC-DC voltage conversion circuit supplying power to the LCD screen is normal. If the output voltage is abnormal, check the fuse resistor, PWM controller, switch, inductor coil, and filter capacitor in this power supply circuit.

and then replace the damaged components.

4. If the voltage at the output end 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 interface of the screen line, and the damaged components can be checked and replaced.

5. If the power supply voltage of the screen cable interface is normal, then check whether the timing signal and driving 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 there is damage, it can be replaced.

The computer has a white screen, and after a while, it is estimated that it is related to the following factors:

This can be caused by the fact that the signal cable from the main unit to the display may come loose if it is not secure.

If it is VGA or DVI, you can try to tighten the screws of the connector piece.

If it is an HDMI cable, you can dial it down and plug it back in.

If it can return to normal, the method is effective.

The display itself.

This phenomenon can be caused if the display itself fails. You can find another monitor with the same interface to replace it for a period of time, if this happens to another monitor, it may be a problem with the cable itself or a problem with the graphics card. If this does not happen with the other monitor, it means that there is a problem with the monitor itself and can be repaired or replaced.

Graphics. Problems with the graphics card are less likely. If there is a problem with the interface between the graphics card and the motherboard, it may cause a blue screen instead of a white screen. If the graphics card itself fails, there is a high possibility that the screen will be blurred and cannot be displayed normally.

1. Check the data connection cable;

2. Check the graphics card;

3. Check the display.

The reasons why the LCD screen is white and black are as follows:

1. There is a problem with the panel driver, and in most cases there is a problem with the circuit. This situation usually happens after booting, which means that some of its circuits and backlights are completely fine, and it also tells everyone that this is a problem with the panel driver.

2. There is a problem with the power supply circuit.

3. The connection cable of the screen is faulty or in poor contact with the screen.

4. If the LCD screen is white after turning off and then turned on, this is the circuit board failure.

Solution: 1. Check whether the screen cable is connected first, this is a small problem that often occurs, so the first step is to plug in the screen cable first, detect that it is no problem, and then consider other reasons that cause the LCD screen to be white.

2. If the connection of the screen line is intact, test whether there is a problem with the circuit, the most common is to use a universal meter to measure the circuit problem.

Assuming that there is no problem with the circuit, that is, the components of the circuit are damaged, and finding the damaged components and replacing them solves the phenomenon of white screen.

3. If there is a problem with the conversion position of the voltage, it is also necessary to check its components, and there will be no problem if the bad components are replaced and reconnected.

4. In addition to the damage of some components that may need to be replaced, there is also the driver chip, if it is a driver problem, then just replace its chip.

5. If you can't solve it by yourself, you should go to the after-sales maintenance office of the computer in time to find professional technicians for maintenance.

How to use the screen:

1. Avoid burning out the inside of the screen and leaving the LCD monitor open for a long time will reduce its lifespan, so the following measures can be taken when not in use: turn off the display when not in use; often change what is displayed on the screen at different intervals; Reduce the brightness of the display to a darker level.

2. Keep the humidity of the environment and do not let things with moisture properties enter the LCD, if the moisture has entered the LCD, the LCD must be placed in a warmer and drier place.

In order to allow the water and organic matter in it to evaporate and then open it. Powering an LCD with humidity can cause corrosion of the liquid crystal electrodes, which can cause permanent damage.

3. Avoid unnecessary vibration LCD can be regarded as the most sensitive electrical equipment, LCD contains a lot of glass and sensitive electrical components, so that the screen is very fragile, try to avoid strong shock and vibration, strong impact can easily lead to damage to the LCD screen and CFL unit.

4. Don't try to disassemble the LCD and never disassemble the LCD. Even after being turned off for a long time, the CFL inverter in the background lighting component can still carry a high voltage of about 1000V, which can cause serious personal injury. <>

What is the reason why the computer will have a white screen and a normal screen? Hello dear, there can be a variety of reasons for the situation of a white screen on your computer, here are some possible reasons: Hardware issues:

Problems with your computer's hardware, such as a bad memory module or a faulty graphics card, can cause your computer to have a white screen. Software problems: Problems with the computer's operating system or other software, such as virus infection, system file corruption, etc., may cause the computer to have a white screen.

Display problems: Problems with the computer's monitor, such as loose display holes, aging displays, etc., may lead to a white screen on the computer. Driver issues:

Problems with your computer's drivers, such as incompatible graphics drivers, corrupted sound card drivers, etc., can cause your computer to have a white screen. In view of the above situation, it is recommended that you try the following method: Check the hardware:

Check whether the hardware of the computer is normal, such as memory modules, graphics cards, hard disks, etc. Check the software: Use anti-virus software to check for virus infection, or re-install the operating system.

Check the display: Check whether the display is normal, such as loose wires, aging, etc. Update Drivers:

Update your computer's drivers, such as graphics drivers, sound drivers, and more. If you have tried all the above methods and the question of filial piety still exists, it is recommended that you contact a professional computer repairer for inspection and repair.