What exactly is broken in the PC?

Question

Iron

Hello. As usual, I came home from work, turned on the PC and safely after 10 - 15 minutes the signal to the monitor abruptly stopped going (it was on, but there was no signal), the PC power button started flashing and the speaker began to emit 4 beeps. Having googled that it was either the mother or the RAM, he disassembled the PC, changed it to the neighboring RAM connectors, and pulled out and inserted the BIOS battery, the PC started up successfully, worked for another 10 minutes and fierce friezes appeared during operation (it just hangs for a couple of three seconds every 30-50 seconds the whole system), and this appeared (see photo)

A photo

When you hover over the icons, the background turns black, and the mouse cursor "deformed" ...
In general, who faced this, what can you say? What needs to be changed?

Answer 1

98% of what vidyuha. because artifact video.

Answer 2

Overheating - the cooler fell off the processor.

Answer 3

You have 10 minutes. During this time, you can at least look at the system logs for error messages.
With RAM problems, the system usually crashes into a BSOD out of the blue.
Still, it's better to start with the video card.
Well, where is the hardware configuration?

Answer 4

If the speaker (tweeter) emits signals (sounds), then we look at the model of the motherboard and google the decoding of the sound signal. he will give you the cause of the problem.