What should I do if my computer screen goes blank?

What should I do if my computer screen goes blank?

1. Enter safe mode, move important content to other disks, and directly choose to restore or reinstall the system;

2. Enter safe mode to conduct a full virus scan;

3. Carry out hardware troubleshooting, re-plug and unplug the memory, and then check whether the hard disk is damaged.

Solutions and maintenance ideas for white screen on monitor

First, rule out whether it is a graphics card problem or a VGA line problem. You can replace the VGA cable with a good monitor to connect the white screen. Check whether the computer host with a faulty screen still has a white screen. If the screen is still white, it is a problem with the computer host. Most of the time it is poor contact or failure of the graphics card. However, in most cases this rarely happens. In addition, most of the time it is normal to change the monitor and the connection is normal. Then we can know that the monitor is faulty. caused by. The solution to the white screen phenomenon caused by a defective monitor is as follows:

1. First disassemble the casing of the LCD display, and then check whether the screen cable interface is loose or not connected properly. After checking, the screen cable connection is normal.

　2. Then turn on the power switch of the laptop, and then use a multimeter to measure whether the power supply voltage of the screen cable interface is normal. If the power supply voltage is normal, go to step 5; if not, check whether the fuse resistor or fuse inductor near the output end of the screen cable is open or damaged. If damaged, just replace the damaged components.　　

　3. If the fuse resistor or fuse inductor near the output end of the screen cable is normal, then check whether the output voltage of the DC-DC voltage conversion circuit that powers the LCD display is normal. If the output voltage is abnormal, check the fuse resistor, PWM controller, switch tube, inductor coil, filter capacitor and other components in the power circuit, and then replace the damaged components.

　4. 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. Check and replace the damaged components. Just components.

　5. If the power supply voltage of the screen line interface is normal, then check whether the timing signals and driving signals in the LCD panel driving circuit are normal. If it is abnormal, check the output signal, input signal and supply voltage of the chip that generates this signal respectively to determine whether the driver chip is damaged. If damaged, just replace it.

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