[njinthesun]

hello - I've had avg free for over a year and now have the virus NTAuthority\system that keeps shutting down the computer - avg free has not detected it - i had this virus years ago but am a beginner and don't remember how to get rid of it or if i have downloaded whatever i need to get rid of it - please help -

[lunarlander]

Try all of the online virus scanners listed here:
http://forums.techguy.org/general-se...elp-tools.html