From the HP link I sent you step 4.Step 4: Read a disc from a command prompt
Confirm that the drive can read discs from a command prompt. Use the following steps to test the discs and the drive from a command prompt:
May I ask if you have tried all on that HP link as this was in the link.
I have doubt that these steps will solve the issue after the extensive steps that have already been taken, but they are definitely worth a try - before you take the more drastic action of a fresh install.
The reason I ask is, that on that link, is the link to the is procedurehttp://h10025.www1.h...en&cc=us&dlc=en
where there is a section relating to the DVD drive. - and using the HP diagnostics system , installed on the computer.
Also I have been looking at the specifications for that computer. That drive is easily removable. If by chance you can find a friend or acquaintance that happens to have the same drive, although the type of disc it will play and the type it will not play does not seem to suggest a hardware error, that may be the conclusive way forward to eliminate the possibility of the drive. I would also run a cleaning disc - obviously avilable from many sources - the link just an examplehttp://www.dabs.com/...tm_content=Q200
You may find this interesting. I appreciate that a lot of the thread is regarding the actual lightscribe ie: burning the label, but the principle of certain media not detected, especailly the mnetionof the drive on HP computers eems to be of relevance.http://www.lightscri...?g=posts&t=2626
Edited by Macboatmaster, 13 October 2011 - 08:54 AM.