My friend has asked me to have a look at her laptop. It had AVG but she never ran as such its loaded with viruses and is pretty un-usable. She has data on there that she wants to keep ie photos and music. I was thinking of just re-installing the OS But I,m unsure whether to Clean install it or repair it? If I repair it it will keep her data intact, I think im correct in saying, but Im concerned that it will still have viruses etc.
You could try booting to safe mode(assuming its xp?) and scanning pc with its avg and deleting all virus's from the virus vault, and while still in safe mode,scanning with anyother security software that maybe installed. If that helps you to boot normally,update all the security programs first especially the virus program and rescan.