Perform a full scan of your computer using BitDefender but customize the scan to use Advanced Heuristics and Deep Level Analysis. If you still have problems, try AdwCleaner as it's a good tool which removes worms and infected registry keys.
There is a fee if you want to upgrade your product. Only some minor updates are free of charge. In order to upgrade the application to the latest version you need to follow the steps from the official web page. Also if you can't find the old license key, check the screenshot provided by Bitdefender.
Perform a full scan of your computer using BitDefender but customize the scan to use Advanced Heuristics and Deep Level Analysis. If you still have problems, try AdwCleaner as it's a good tool which removes worms and infected registry keys.
There is a fee if you want to upgrade your product. Only some minor updates are free of charge. In order to upgrade the application to the latest version you need to follow the steps from the official web page. Also if you can't find the old license key, check the screenshot provided by Bitdefender.