Doesnt matter how many people you down vote, no one here can or will assist you in byassing security for anything for any reason. Either remember it, or ask the person who owns the hard drive.
Why not just purchase what you need and do it right? Nothing worse and more frustrating than trying to do something like that and have to rig it that way.
Its old. The 560m is not that good, the only thing worth anything really is the RAM. Not sure what you figured it would be worth. Check ebay prices, maybe im wrong. But thats what id pay for it.