Sometimes while i am working on my PC everything stops and the screen goes off. ?

Question

Sometimes while i am working on my PC everything stops and the screen goes off but the PC still working but everything comes to a complete halt.

It is slow too.

and it doesn't run a deskcheck when it doesn't shut down properly.

I have changed all the software and some components of the hardware too. but these three problems

Can anyone tell me what causes this.

Answer 1

My computer does the same. I am convinced that it is possessed.