Confuzzled

About two days ago I updated my Toshiba Satellite with the Vista Service Pack 1, shortly after my sound and DVD rom drive stopped working. I've done some hunting and found both are common problems, but i can't seem to get the DVD rom drive fixed. Sound's not a problem any more but won't do much good if I can't use the drive. It won't recognize any disk put in. I keep getting the message to insert a disk and the drive ejects. Help anyone? I'm in way over my head at this point.

The model number is A215-S4747. I hadn't found that particular article, but I'll give it a go. Thanks!