I''m not computer savvy that much is obvious,but i have a big problem.the tornado that tore through our county recently fried my old mobo.my hdd still works but the os wants a key to run windows.my legit key that ran the os when it was in my deep fried doo box naturally won't work now that its in the dell dem.3000.is there someway i can get around having to buy another key to work it?