I am receiving this error (windows cannot access the specified device, path or file. You may not have appropriate permissions to access the item)with all programs files and cannot access system tools. I am running xp home edition. My free AVG detected a virus but wouldn't heal, delete or move it. Plus I can't recall that I ever set the administrator password, I usually left it blank. I also recall that the virus detected by avg said it was a .dll in the core system. I shut avg down after it wouldn't heal, move or delete the virus, and of course now I can't access avg either. Does anyone have any ideas as to what I can do?