hello, i have (had) a sony dvd rw dw-u12a dvd driver. I downloaded an update from sony to help it read better and when i applied the update, it deleted the driver completely. when i open device manager, it is no longer listed there. i have looked in bios and did a recovery of c drive and nothing has worked. what options do i have? ive chatted with sony for hours with no luck. they say i have to send it in to be repair and there is no download available anywhere. please help!!!!!