Computer slowing down

[porkandb]

My computer slows down the longer I leave it on. I turn it off and it improves but not to it's original glory. I have reinstalled windows and this helped, but the problem returned fairly quickly. Could this be because of outdated drivers conflicting with newer up to date drivers? Or to many processes running? Any ideas or suggestions on how to fix this would be very helpful.

[RodeoBlue]

Try unplugging it from the internet and leaving it on for a bit, see if it still does that.

[porkandb]

Tried it but it did not help. Any other ideas out there?