I had a problem with DVDs not being recognised by my drive. This was fixed using a Microsoft Fixit.
Since then, I've had to reinstall an image of XP for other reasons, and I've noticed that I have a problem with the DVD drive again. Unfortunately, this time I can't get it working again.
The drive, which is shown in My Computer, will play blank DVDs but not commercial ones any more.
The lense has been cleaned. I've also tried CDGone and deleted the Lower Filters in the Registry.
Please help, as MS Fixit can't connect to their site for tailored solutions.