A little known problem is that removing virus, spyware and such does not repair the damage. Microsoft and no other company I know of has found a tool that will find all the damage that can be done.
If after PCBugDoctor and more doesn't cure it, then you backup what you can't lose (you already do, but I always repeat it for those that don't) then you wipe it out and install it like you did the first time plus antivirus, firewall so you don't have a repeat occurance.
My computer is constantly reloaded itself , only I want to open a folder. I cannot understand w occurs. At me an antivirus "PC-cillin", have removed some viruses, have started " Error Nuker " which too find a heap of mistakes and has repaired them, and at me "PCBugDoctor", my operating system- Windows professional SP2.