I was just infected with a virus called the sassen worm. What this virus does is crash a file in your comp called lsass.exe which prompts you that your comp will restart in 59 seconds. There is a removal tool from symantec that is free.
http://securityresponse.symantec.com/avcenter/venc/data/w32.sasser.removal.tool.html
symantec also provides a free virus scanner
http://security.symantec.com/sscv6/...fid=23&pkj=MKPHLSIVFWMFKPXKBQW&vc_scanstate=2
http://securityresponse.symantec.com/avcenter/venc/data/w32.sasser.removal.tool.html
symantec also provides a free virus scanner
http://security.symantec.com/sscv6/...fid=23&pkj=MKPHLSIVFWMFKPXKBQW&vc_scanstate=2