Defrag Your Hard Drive in Windows Vista
If you do not defrag, not only does your PC slow down to the point it’s unusable, it can also wreck your whole Windows Vista install!
Double-click this icon on your desktop:
This window opens…
Right-click your hard drive and click “Properties”. This window now opens…
Click the “Tools” tab and your window will look like this…
Click “Defragment Now” and this window opens…
Again, click “Defragment Now”.