What is the reason for the black screen of the old computer crash, talk to me in detail

Suspect a motherboard COMS or power supply issue.

When the computer is working, the machine is self-tested. From your description, there were no alarms. That is, there is no problem with the hardware of the machine itself. (refers to the memory graphics card or something).

But at the same time you say that sometimes you can't enter the BIOS, and you can enter it after an interval of 1-2 hours. So my personal suspicion is:

1。Power issues. The power supply of the motherboard is not grouped, and (combined with the voltage situation of your home) the motherboard will be insufficient in the case of such a failure.

There are also 2 points in this. One could be that there is a problem with your power supply itself. Second, the capacitor on the motherboard is aging and bursting.

2。Motherboard issues. You take a closer look at the back of the motherboard. Whether the line is disconnected.

There was a problem with the COMS module on the motherboard. He controls the work of the motherboard's hardware when the computer itself does not have a system, and if he is damaged, the BIOS cannot enter.

Personal opinion. You can try. It's hard to forgive. 4

Probably because the temperature was too high before, the motherboard burned somewhere, the heat dissipation was slow, it might burn out, the fan rotated, or it could be low-speed, so it was too late to dissipate heat, and when you could use it before, there should be a situation when running large game software and it would crash in an hour or two, right? If there is a heat dissipation problem, the most serious is that the motherboard or processor is burned out. Find another part and replace it, and if it can run, install a speed measurement or temperature measurement software.

This kind of problem is to change the part test, there is no other way, the system can't get in.

Check the heat dissipation of the graphics card, the temperature of the graphics card is too high, or the existing particles are broken, which will cause a black screen and restart.

There are many reasons why a computer has a black screen, and the common ones are:

Shows poor contact of the data cable;

There is no power supply to the motherboard;

Poor graphics card contact or;

Poor CPU contact and overheating;

Poor contact of memory modules;

poor power performance;

Machine infection. CIH virus, BIOS

is destructively refreshed.

Microsoft black screen, please patch.

Most of these problems are the relationship between the memory and the graphics card, loose or poor contact, just move it or use the eraser to wipe the gold finger of the interface

Check to see if the fan is spinning or if there is a lot of dust. With the magic rabbit, you can see the CPU temperature, and if it's too hot, it will crash.

Computer processor problems or viruses.

This kind of problem should be solved by a computer repairer.