Use system restore to when it worked. Worth mentioning is an user that really torqued their Sony laptop by installing APSI drivers and who knows what else. I couldn't fix it and in the end, just used the restore CDs.
I have a Sony GRZ660 laptop, which comes with a DVD-RW drive. When I look in device manager it is listed as a Toshiba DVD-ROM drive, however. I have been unable to use DVD copying software as a result. Any ideas on what I need to do?