Spybot is not a virus scanner. It is only for spyware/malware.. It is apparent that you have something for sure.
Turn off the system restore as the bad stuff protects itself by hiding with it. to turn it off:
start > r click "my computer" > select properties >
system restore > click the box "turn off system restore" then ok out.
go to this site and use their free and safe system scanner to find the stuff and fix it...