1) Scan your system with antispyware programs.. Recommended are; Adaware SE
Personal, Spybot Search and Destroy, CWShredder, SpywareBlaster and
HijackThis as last resort in case nothing is detected with the previous
programs.
http://www.majorgeeks.com/downloads31.html
2) Ago hot Start\Run\type; msconfig and hit enter\go to Startup tab and
uncheck unknown non-system processes to disable them.
3) Go to Start\Run\type; regedit and expand the Local Machine and Current
User hives down to the Run keys and delete unknown non-system values.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
4) Go to Control Panel\Add or Remove Programs\Configure Access and Default
Programs\and select Microsoft Windows Programs.
5) Go to Control Panel\Internet Options\Programs\and click on Restore Web
Settings.
6) Reboot the computer.
---------------------------------------