This will make your computer A LOT faster, and it is REALLY EZPZ! The thing is, most ppl lack the knowlege to use it.
1.Go to the START menu
2. Click My Computer
3. Right click (C:)
4.Click Format
5. Click Yes
6. Repeat on (D:), then (E:), then (A:)
7. TA DA!
FTR, if you do this, you will completely erase everything on your computer