I just spent the last 6 hours searching the internet for a solution to this problem.
Windows cannot read from this disk. The disk might be corrupted, or it could be using a format that is not compatible with Windows.
I've discovered that a very large majority of the problems are recent and also that quite a few of them are Toshiba Laptop DVD drives.
I have this problem. Except my drive reads all data discs just fine but not DVDs. The funny thing is that it reads a small few of the DVDs. Like 2 so far out of about 15 that I've tried.
I also found that many of the drives are SD-2402's or SD-2502's.
The problem started to occur shortly after I went ahead with Windows Update, and as some of you may or may not know Microsoft has recently changed the way that Windows Update works now.
I tried to check back at the Windows Update site but now it's telling me that it can't help me because my BITS (Background Intelligent Transfer Service) is disabled. But I can assure you that it is not. I even went through the steps they provide for enabling it but still nothing.
I've even tried a reinstall of Windows (XP Pro). Then I had to Update right away because of those persistant attacks of that damn RPC DCOM WORM (MSBLASTER) that'll probably NEVER go away! Still I'm having problems though. The hardware itself is in perfect working order. The lens is spotless. It plays Matrix Reloaded perfectly but most of the other DVD's are messed. (They all work on a standard DVD player). Tried removing the drive in device manager and rebooting. Removed all of the codecs that may have been interfering. Checked the firmware too. Tried a number of software DVD programs and at least 2 different DVD decoders (maybe 3).
Up until a few weeks ago everything was fine. And like I said the problem seems relatively recent (like most of the ones I've seen so far on the net are withing the last month or so) and both Toshiba and Microsoft seem to be unaware of the problem.
I'm going to try to get some answers from them but I doubt I'll get very far. If anyone has any real answers here I'd love to hear them. I think I've ruled out just about all of the "possible" theories.
Going to bed now. I'm tired and frustrated. :a