I was using Overnet last night and received a 'Backdoor.Blarul' virus warning from Norton AV 2002. Apparently this was a 'false positive', whatever that means, but I shut-down XP last night only to find out this morning XP won't boot-up past the XP logo. I have tried to recover XP using the CD but after pressing F8 (for terms and conditions) I got a large unspecific error message. Should I now reformat the XP partition and hope this solves the problem or are there further paths to take? Thank you.