In honor of Le'nny (read below) I decided to share with you a "hook up" (A thing of value for free or reduced price).
In this case it's FREE!!!!
I had computer problems a while back and my friend "Rod" (insert sexual pun here)told me of two tools that can clean your computer for free. Disclaimer: I don't know the difference between the internets and Windows so you bear the risk. I do know that I have used it and it does seem to make my computer run better. Enjoy!