Try and do what they say about removing the registry files if you know what you're doing but if you're not sure don't touch them because you could crash your entire system and have to reformat your HD. I would tell them you've done what they ask but the problem persists and you want your money back or a replacement. It seems as though the drive is faulty in some way.
hey guys, i returned my sony and got a plextor px-708a. it works great. no problems so far. thanks to everyone who helped.