kapusta-
Have you followed the instructions detailed in the site listed above?
If not, I strongly suggest that you do.
If you have already done so, and your computer is still loaded with rogue software that antivirus programs can’t remove, you have the following options:
1) Back up your data and use the restore disk that your PC hopefully came with to reset your computer to its “just purchased” state. If you don’t have such a disk, contact the manufacturer.
2) Google every symptom as it pops up on your PC and try to address it.
3) Get a pro (or a knowledgeable and patient amateur) to disinfect your PC.