In addition, the landlord first opened the cover of the chassis, blew it on the chassis with an external fan, and started it for a while to see if it was normal. If it is normal, it is a heat dissipation problem. You can do the following:

1. Remove the fan frame, unscrew the screws with a screwdriver, and then remove the fan. First, use a brush to remove dust. A round insulating glue (with a label on the other side) is stuck in the middle of the back of the fan. Tear it off and you can see the rotating shaft inside. Drop a few drops of lubricating oil (I use sewing machine oil) and turn the fan while dripping. Remember not to add too much and glue the insulation back. All right!

Of course, I have money to buy new ones.

2, it is best to buy a CPU fan cover to cover the CPU exhaust.

If it is not a heat dissipation problem, then the possibility of poor memory is very high. Generally, two memories are installed, and you take turns to look at them, only one at a time. Try two slots separately.

Finally, only the graphics card and motherboard are left. I don't think it's necessary to say it. It can only be repaired.

The possibility of CPU is small, but it is not absolute. Do what you can, or repair it if you can't! Good luck!