Try a boot time scan with avast! Right click the scanner screen, select 'schedule a boot time scan' and reboot when requested. (Or open the tab at the top left of the scanner screen and select the boot time option from there.)
Try a scan with
DrWeb CureIT!Try the usual free adware/spyware scanners.
SUPERAntiSpyware FreeMalwarebytes' Anti-MalwareDownload, install and update the programs.
Always select the option to quarantine any malware found rather than delete it, then you will be able to restore files or registry entries wrongly identified as malware- a rare but not unknown event for any malware scanner.
