[jerrybwa]

Sometime in the past 45 days my system (W2k sp4 update rollup 1) has become corrupted. When I bootup with a commercial DVD in the CDROM dive, all 4 of my DVD players work fine, but if I then open then close the CDROM drive with the same DVD in it I get a blue scrren with various references to BAD_Pool_Header and either NTOSKRNL.exe or my ATI video driver. After rebooting any attempted access to the drive produces increasingly bizarre "desktop" error msgs with the text in the msg box blanked out. One time I did get this msg - "Access to the specified device, path, or file is denied". I've done all the usual debugging (virus checks, uninstall/reinstall drive, defrag, etc. I've also tried running the SFC /Scannow command, but it won't recognize either my original W2K installation disk or the SP4 update I've got on disk - it just keeps asking for a location where it can find the "original" files. With SP4 I thought this problem went away, but not on my system.

Can anyone suggest anything debugging-wise. I'm not a techno geek nor a newbie. Probably I've got both a corrupt registry entry and a corrupt system file, but I don't know how to identify them or get them fixed. Any assistance would be appreciated. Jerry B
Note: if I have a data DVD in the CDROM drive I can read and execute files from it. I can also write a data disk (but not a dvd movie disk). I've run a drive check on the drive that Sony provided and it passes that fine.