It's clear that whatever is affecting your PC is right there in your PC,
I'd suggest you do a proper clean up of the system, Uninstall all Windows application and get something new to the system, format your hard and disk drive as well, Watch the kind of elements or devices you connect I to your system, stop installing pirated application from unverified source into your system. I believe if you take all of this procedures and follow up with the guidelines, you would be absolutely free from all of this