Re: Computers WTF!
Before reformatting the hard disc make sure you've tried all the other options. Unless you're extremely thorough there will be something you miss... (unless that's just me).
Do some system maintenance - un-install/remove anything you don't use, delete all un-necessary files/folders, defragment the disc, clean your temp folders, delete browser history, cookies etc, perform disc clean-up.
Then download something like Windows Washer to remove any spyware etc and defrag your disc again.
That'll help some and if it's still not running right, format C:
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