Hello! I've been to this site once before and It really helped me out a lot, so I thought I would come here after trying to help fix my brothers pc.
He's been having some problems for the last couple of months and he's ran a couple of programs to try and figure out what the problem is; Such as malwarebytes and avast. But every time he thought he had it fixed, it would come back even worse. After looking over his pc, I've noticed that he has a lot of useless and unknown programs starting up and running at all times.
I've tried to turn them off and remove them, but it didn't do any good. When he starts up his pc, it takes about 10-15 minutes before it's finally finished booting up. Also, when you open up firefox, the pc shuts off. I've noticed that the pc is running very hot and if you try to do anything else other then turn it on, the temperature spikes and it shuts down.
Any help would be greatly appreciated! I will answer any question you might have to the best of my knowledge. Again, thank you for any and all help.