lol
Any sound that is made by the voltage regulators would be so silent that it wouldn't matter. MOFSETs can sound sometimes, but they make a audible squeal as the ferrite core vibrates in the copper wiring extremely fast.
If the hard drive was failing and making that much noise because of it you would get a lot more notification than just windows freezing occasionally. Such as nothing working at all.
Sounds more like overheating, power supply issues, or (more likely) driver conflicts.
What makes me doubt that its hardware is that if it was OSX would be messing up as well.
arent you clever
but seriously, calling activity "thinking"? I haven't done that since i was eight.