Take it to a repair shop. I have never had as many problems as I have with this one PC and am confident the reason is because there are more than just malware problems. It needs to be looked at by someone with the experience and tools to fix it.
The more suggestions I give the worse things seem to get and you then accuse me of messing up the PC, waiting 2 and 3 days in between accusations at that.
Take it to a repair shop.