Gissmo50

I haven't used my og Xbox for a while I decided I wanted it set up and to play it again did all of that and it goes to boot up gives me a display but shows the contact service center with error code 12. I looked up the code and it points to the dvd drive. I've opened it cleaned it and still no luck. What are my options would a hard mod and no dvd bios be a better fix than replacing the drive? Or would buying a parts machine be better. Thanks Kyran.