1. I dont have any antivirus-programs, because of all troubles they created :-) (atleast not that i am aware of) 2. in taskmanager "winlogon.exe" is running. 3. I treid to do as you said by activating windows and it said windows is already installed. Thank you very much, for trying to help me. I will try to install the above mentioned progam for antivirus. /Robert