I have two drives for DVD's and CD's. I can't remember if I have ever used either of these on my computer. The Device Manager lists lite-on dvd sohd-16p9s and TSSTcorp CD/DVDW TS-H552b with yellow exclamation marks next to them. I have quickly searched for drivers, but I don't know if that is even the problem. I have tried disabling, uninstalling, but the drivers will not update (can't find any). Neither one recognizes discs, and the computer gives me "Windows cannot initialize the device driver for this hardware. (Code 37)" under the device properties. Please let me know if you need any other info. Thanks so much.