The Pioneer DVR-104 came with my Sony VAIO RZ Series Desktop. Somefays back, it just stopped reading audio CD's, CD-ROM's [It does not recognize these media types at all]. It does not burn CD's or DVD's. Ir recognizes and Plays DVD's just fine. I have upgraded to the latest Firmware version [1.40] from the Sony VAIO Site. I would appreciate any pointers to troubleshoot this. Thanks!