How do I recover this lost space?

[mrguy83]

My computer seems to be slowing down recently.
Obviously the first thing I tried was a defrag, and there were a huge amount of fragmented files that showed up as red in the defrag diagram. It said I was down to only 18% of space remaining.

This is a recent occurence. They weren't there the last time I did a defrag (maybe a month ago). I had a lot of unused space on the hard drive, and now somehow I am accumulating all these fragmented files.

How can I get rid of them and get back my disc space?

[WWP]

Have you installed or downloaded anything that should take up so much space?

How large is your hard drive? The items that take up the most amount of space are generally videos or DVDs that have been copied and lots of music.