hey jari, i've had the same problems with my old motherboard! it would kill any drive attached to it except the hard disk. i went through about 5 floppy drives, 3 cdrw drives, and 4 dvd drives. then i got super pissed and sent it to the dreaded closet of no return! (the closet of no return is my old bedroom that is filled to the absolute edge with stuff that i don't use anymore.) i now own a much better computer that i have referred to in my last few posts.