Try System Restore to a point when it was working OK.....
What Operating System.... XP Vista Windows 7 etc...
How long is it since last time Windows was freshly installed on the PC ?
Re-installing Windows does make your software like New again..... but, if it doesn't fix the problem you may have a hardware problem ?
Don't forget to backup your Data & Drivers & Passwords & Software Installation Keys & settings etc... if you still decide to reinstall Windows
(or make a ghost image of your drive)
Bookmarks