Tondee

Hi all I recently bought a computer via eBay at what I considered a very good deal, the only problem I have however is the person who had the PC before me installed a copy of WINner Tweak SE2 2.9.0, the software is password protected so I'm unable to use the software and the person no longer has the password. Can anyone please advise how I can get into this program, I've tried uninstaling it and reinstalling but the password seems to be stored elsewhere somehow? kind rgds Richard