Open 'my computer'' and right click your main drive, normally c:\. Select 'properties'. click the 'tools' tab. Under 'errors' click 'check now'. Check both boxes, and let it run. It is suprising how many errors this will fix. It may take a while to complete, depending on the size of your drive and many other parameters. Go and have several cups of coffee!! Or take the dog for a walk. Hope this helps.
Paul Higgins, July 2005