Then throw your PC off of a bridge and buy a Mac.
I've had mine since 2011, a 13" MacBook Pro, and have installed exactly 0 antivirus/malware programs and have had 0 problems with my laptop. I've not had anything malicious like what you are describing with your PC.
Sorry to hear you are having problems though. That is incredibly frustrating to deal with.
Also, sorry I'm not able to give you the help you need at this time.