Try scanning with ewido anti-malware
, its one of the better malware scanners and picks most things up!
After you have downloaded and installed, please run an update to make sure you have the latest definitions. After you have updated, reboot the computer into safe mode by hitting the F8 key just as your PC loads up. Once loaded, (it will look different) run a scan with ewido, once done , restart you PC normally.ewido Anti-Malware
If you find youre still having problems, please post a High Jack This log and allow for up to 5 days for a reply, you may find this will be most helpful