HELP!! Our computer does not recognize any disks in the CD drive. The following is the error message that pops up when we try to access a disk in the drive: "Windows cannot read from this disk. The disk might be corrupted or it may be using a format that is not compatible with Windows." I've gone to Device Manager and it shows that it's working properly. I've also run regedit and looked for the HKEYLOCALMachine thing, but there are not upper and lower values. We do not have write capabilites on this drive. It's purely used to run CD's. Something's been deleted somehow, but I just don't know what it is. The other errors of this nature that I've found on-line all involve Linus or RW capability. This is just a home computer that has all of the sudden lost it's mind! Any ideas?? Thanks!

I've had this problem also and i just deleted the CD-rom drive from the device manager's list and restarted the computer. Windows will reinstall it again. Hope this helps

I'm suddenly getting the same problem. System Information / Software Environment / System Drivers tells me that the CDFS File System Driver is Disabled. Lizette advises "delete the CD-rom drive from the device manager's list and re-start the computer. Windows will re-install again" Do you mean unistall the driver ? Where does Windows find the driver to re-install again i.e. do I need a CD with it on ?

I found this in the MSDN Library ... Perhaps the XP Service Pack 1 has disabled CDFS so that the DVD-drive is now only recognising UDF - still trying to find out how to enable CDFS again ... http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/cdfs.asp CDFS CDFS, or CD-ROM File System, is a relatively simple format that was defined in 1988 as the read-only formatting standard for CD-ROM media. Windows 2000 implements ISO 9660-compliant CDFS in \Winnt\System32\Drivers\Cdfs.sys, with long file name support defined by Level 2 of the ISO 9660 standard. Because of its simplicity, the CDFS format has a number of restrictions: Directory and file names must be fewer than 32 characters long. Directory trees can be no more than eight levels deep. CDFS is considered a legacy format because the industry has adopted the Universal Disk Format (UDF) as the standard for read-only media.

DVD-DRIVE NOW WORKING OK READING BOTH CDFS discs AND UDF discs ... What I did was create a system restore point, insert the recovery cd that came with the laptop and the DVD-Drive immediately recognised it as a CDFS disc. I reloaded Power DVD and after that the DVD-Drive recognised all CDFS discs that I inserted !!! It blipped about 5 minutes later and stopped recognising them again including the recovery disc. All I did was restore back to the restore point I'd created, inserted the recovery disc again, reloaded Power DVD again and voila it's all working again --- weird ? sure is !!! Checked everything again this morning including DVD UDF discs and all is back to normal. What went wrong ? who knows ... What fixed it ? who knows ... Just hope the same process fixes it the next time it all goes wrong again. The wonders of rocket science eh ... CDFS in System Information is still showing disabled and runnig so the lead to be enabling that was up the garden path - sorry about that ... Thx everyone for your input. If you're having the same problems I do hope you get to fix them as easy as this "fix" "fixed" mine this time round !