What should I do if I enable the white screen on my computer and how to solve the white screen?

Based on our experience, we will analyze the troubleshooting ideas of the white screen on the boot screen.

1. First split the shell of the LCD screen, and then check whether the screen line interface is loose or not connected. Check that the screen connection is normal.

2. Turn on the power switch of the laptop, and then use a multimeter to measure whether the power supply voltage of the screen line interface is normal. If the power supply voltage is normal, go to step 1. If the power supply voltage is not normal, then check whether the resistance or inductance near the output end of the screen line is open or damaged. If damaged, replace the damaged component.

3, if the screen line output near the insurance resistance or inductance normal, then check the LCD screen supply of DC-DC voltage conversion circuit output voltage is normal. If the output voltage is abnormal, check the safe resistance, PWM controller, switch tube, inductance coil, filter capacitor and other components in the power supply circuit, and then replace the damaged components.

4, if the output voltage of the DC-DC voltage conversion circuit is normal, the DC-DC voltage conversion circuit output to the screen interface between the damaged capacitor and other components, check and replace the damaged components can be.

5. If the power supply voltage of the screen line interface is normal, check whether the timing signal and driving signal in the LCD panel drive circuit are normal. If not, check the output signal, input signal, and power supply voltage of the chip that generates the signal to determine whether the driver chip is damaged. If it is damaged, replace it.

The white screen is not as easy as the black screen. You need to know some information about the display circuit. It is best to ask professional display maintenance personnel for repair.

The solution provided by the official website 360 is as follows:

1) a power failure on the monitor, or poor contact with the display data line. In addition, the power cord of the monitor is prone to oxidation and damage when the computer is used for too long;
(2) no power supply for the motherboard;
(3) poor contact or damage to the video card;
(4) poor CPU access;
(5) poor contact with memory stick;
(6) the computer is infected with the CIH virus, and the BIOS is refreshed;
(7) check plugging. If necessary, remove the oxide film on the golden finger using erasers;
(8) If a floppy disk is attached to a floppy disk, a black screen may appear when the computer is started or restarted, and the computer cannot enter the system. To avoid this problem, you can also cancel the floppy disk boot item in the BIOS.
You can connect the computer and the PC monitor to start up and check whether the display is normal (there is an external PC display port at the rear of the general computer ). If the PC display and notebook screen display are both white screens, 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 group is provided to the LCD screen and the other is provided to the display port. The best test method is to connect to the PC display.