If you suspect that your computer has been infected with malware please follow this tutorial on removing the infection.
1. First disable System Restore and reboot your pc, this will delete all of your old restore points so that you can't accidentally reinfect your pc.

2. Download
Combofix and run it.

3. Install
CCleaner and run it, this will delete all of your temporary and junk files, download the “slim build”.

4. Install
Microsoft Security Essentials, update it and do a full system scan and remove all that it finds. Make sure to uninstall your current antivirus program first.

5. Install
Malwarebyte's Anti-Malware, update it and do a full system scan and remove all that it finds.

6. Install
SUPERAntiSpyware, update it and do a full system scan and remove all that it finds.

7. Install
SpyBot Search & Destroy, make sure to uncheck the team timer option during the install. Update then do a full system scan and remove all that it finds.

8. Install
SpywareBlaster, update and use the "Immunize" feature to help prevent future infections.

9. Install
Glary Utilities and perform the 1-Click Maintenance option.

10. Download
Autoruns and see if there are any leftover malware entries that were missed and delete them. (Autoruns is like HijackThis on steroids.)
11. Go to Microsoft Update (at the top of your Start menu) and do ALL of the updates that are available.