Download and Get a free PC safety scan from Microsoft for Windows 7

Windows Live OneCare safety scanner is a free service designed to help ensure the health of your PC.
- Check for and remove viruses
- Get rid of junk on your hard disk
- Improve your PC's performance

New: Windows Vista users, try the beta edition of the scanner, just for Windows Vista.

Fix specific PC issues

Use the full service scan to check everything. To help fix particular problems on your PC, turn to the individual scanners below.

http://onecare.live.com/site/en-us/default.htm?s_cid=sah