While in safe mode, did you head to the device manager to remove that drive?
Okay, I have an HP m7750n with a TSST TS-H653L CD/DVD combo drive running Windows Vista Home. I have read on here and on many other pages including the HP support pages and the microsoft Knowledge base articles about this problem.
Most peoples problems are solved by deleting the upper/lower filter registry keys, but mine is not.
So far I have uninstalled all cd/dvd third party software, uninstalled itunes, checked the SATA and power cables inside the computer, and deleted the upper/lower reg files.
Still in the device manager, the drive is listed under "other devices" instead of Drives and has a question mark by it. It gives no error code since it doesn't have the exclamation point by it. The BIOS recognizes the drive when I look at it during boot up, but the computer doesn't see it at all once in windows. I've tried downloading new firmware for it, but none of the programs that will install the firmware (including the one from Samsung, who makes this drive) can see the drive, so they won't let me install new firmware for a drive I "don't have."
CAN SOMEONE PLEASE SUGGEST SOMETHING I HAVEN'T TRIED ALREADY?!