It's one strange bug, I've known of speed viruses (very rare and old now), but they attack, overclock and thrash the hard-drive in attempt to create bad sectors. Your computer would seem to perform well, speed up over time quickly, blue screen/overheat, damage the components. (No, it doesn't blow up the entire computer or create a fire, that was just an april fools joke if you heard that one) Motherboards protect your system against most overheating these days anyway.
It might be your hardware like the graphic card or processor is damaged? Unless you have the graphic card on a failing rail and getting too much power or something? In which case it would be the Power Suppy Unit (PSU).
The settings and drivers only do so much and if not overwritten by another piece of software, they should not make your games speed up to the point of being out of sync.
Vertical Sync is an option in most games to stop a tearing affect when some computers can't keep up with the display. It would also limit the FPS to 60.
I don't think calling a tech will help, without them actually psychically going over it.
Also in this case, what does Microsoft have to do with it? Probably a lot in most issues, lol, but this one is hardware or device drivers/software.
NVIDIA has Customer Care and support forums on their site if you wish to ask them about the graphic card issue.