Some people do a periodic reformat and reinstall of Windows to clear out all the junk and start clean, uncorrupted and unbloated. It's not all that hard to do, but you will have to set aside a good block of uninterrupted butt-flattening time in which to do it.

And if you're at all apprehensive about it, don't try it. One must be firm and cofident with our computers or they'll walk all over you and end up contolling you and huge blocks of your time. ;)