Tdk dvdrw 420n

I own a tdk dvdrw 420n. It used to work just fine but i had lost my restore disk for m pc and had to use another copy of xp to put on my computer that had sp2 already with it. Now my dvd burner dont recognize dvds of any kind. It will play cds but not dvds. I did some research and it has something to do with sp2. I have downloaded the lastest firmware for it but still nothing. Any one have any ideas on how to get it to work. Thanks

Install actual IDE drivers, firmware has nothing to do with it.