try downloading
hijackthis and post the logs
Removal tool after you run this tool, (registry) check HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run
DELETE this from the entires
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\System \NoDispBackgroundPage and [same]\NoDispScrSvrPage (they are both set to 1. Delete both entries.