Your initial post did not provide specific details as to which program(s) you used in your previous attempts, or which (if any) antivirus program you are using.
Get (and use) the following free programs:
(Make sure you get the latest updates for each program before you scan.)
(Other posts on this site recommend renaming the file to zztoy.exe before saving it to your desktop)
If SUPERAnti-Spyware, Malwarebtes' Antimalware, find/fix infections, you may want to delete your restore points (to ensure there are no infected restore points). To delete all restore points, go to Control Panel, System, System Restore tab, put a checkmark in "Turn Off System Restore" and hit Apply.
Take the tour, see what the program does, look at the screen shots.
It not only cleans your computer, it also has a Registry tool that will check for/fix registry errors, and an "uninstall programs" tool and a "startup" tool (that you can use to stop bad things from running on boot).
Run an online scan with Kapersky:http://www.kaspersky.com/kos/eng/partner/d...kavwebscan.html
(After you get all of this fixed, you will probably want to turn System Restore back on. To turn System Restore back on, go to Control Panel, System, System Restore tab, click to take the checkmark out of "Turn Off System Restore" and hit Apply. Then hit OK to close. )
Please report back with the results of the scans and whether you are still experiencing symptoms of infection.
(Side note: After a scan that results in infections found/fixed, I always scan again, to make sure it comes up "clean")