Your post is confusing. Firstly, if she's locked out of her computer, how
did you try to run SFC /scannow (to which you say your were denied access)?
How did you try system restore? This is a Vista news group yet you say
you're trying to do a system repair with an XP disk. What OS are you
running?
Did you try to boot from this XP CD? Is your BIOS set to boot from the
DVD/CD drive?
Reinstalling isn't a necessity. Malwarebtyes from
[url]http://www.malwarebytes.org/[/url] can remove this infection, but it's unclear
what you can and can't boot to or run. Perhaps you should get some
professional help with this. (and not from the local big store, but a
qualified technician).
--

"Merle" <planogram@comcast.net> wrote in message
news:AD82691A-CCFC-4DB5-AED6-884CAB186755@microsoft.com...[color=blue]
> My wife was on the internet and suddenly System Pro popped up and started
> scanning warning my wife of a virus attack on her computer and wanted her
> to buy the AV Pgm for $49.95. She just clicked all the exits and got off
> of the internet and now she is locked out of her computer. We can't get
> system restore to work, Can't get safe mode to work, She has AVG 8
> installed but cannot start it. Tried SFC /scannow but was denied access.
> Tried putting the Windows XP disk in to do a repair and was unable to get
> it to start. I think the only thing to do is reformat the HD and start
> over but her PC ignores the A drive and the dvd drives. I cannot get into
> it in order to re format it. We are at a loss. Any Ideas would be
> appreciated.[/color]