The monitor screen suddenly goes black, and the console cannot be restarted and shut down

This is caused by the wrong reset signal generated by the host system reset circuit of the host power supply, or the poor thermal stability of the resistor, capacitor and integrated circuit of the PG circuit;

The landlord can borrow someone else's host power supply to try it first, and if the problem is troubleshooting, it can be concluded that it is a problem with the host power supply.

Please check if your CPU fan is turning and if there is a sound when it turns.

I suspect it's the CPU overheating.

Check the fan for damage. Overheating will lead to protection.

There is also whether the socket of the hardware will be in bad contact, you can unplug it to clean up the dust.

Wipe the connector clean.

I guess your computer is pretty old. Hehe: Clean up the dust or something.

You can also add a fan to the case. to lower the temperature of the machine!

It is estimated that it is too hot, and the machine is relatively old, when there are too many running programs, the hardware load increases, and the heating increases, resulting in a black screen. If the heat dissipation is improved, it is estimated that the effect is not obvious, mainly because the machine is too old and the motherboard is the reason.

Clean up the dust and reinstall the system.

If it doesn't work, it's a hardware problem.

I want to come to this machine. The hardware and software haven't been moved in a long time. Let's reinstall the system first. The windows system will be reinstalled in a month. It's fast to use. Let's clean up the hardware, too. You should be surprised by the amount of dust inside.

The host is too dusty.

It's dirty.

1. First of all, we conduct a comprehensive check on the connection between the computer monitor and the host, and plug each connection back to see if there is a connection problem.

2. If the fault still exists, then we need to open the chassis to see if the chassis contains metals and other substances, causing a short circuit in the computer host circuit, and then we smell the computer to see if there is a burning smell, and see if there are damaged components around the motherboard and around the CPU.

3. After checking the whole chassis, there is no abnormality in the chassis, then we will dust the chassis.

4. If it can't be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

5. If the fault still exists, it is likely to be a memory card.

Graphics card, CPU, motherboard, etc., at this time, we only need to plug and unplug these hardware, or replace it again, and try one by one to find the cause.

6. If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

7. When the computer is turned on and started, the system BIOS starts to POST (power-on self-test), and when a fatal error is detected in a certain device in the computer, the speaker is controlled.

Make a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound. If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.

Dear, it is recommended that you check whether the computer screen is black due to the loose power supply of the screen or the loose data cable connected to the screen and the computer.

If the above two situations are not the case, it is recommended that you contact the seller of the display you purchased for repair.