I have a Toshiba Satellite 2655XDVD & the DVD drive is no longer functioning. (The light flashes for a while then goes solid & the screen says "cannot read drive D: Abort Retry Fail") The rest of the computer seems OK. Can I replace it with a notebook CD-ROM or do I really have to put the specific part in there like laptopparts.com said I have to? Where seems to be the cheapest place (or site) to buy parts?