I think it happened after uninstall of I-tunes. Not in device mgr. Not in my computer. Found .inf files in other location but lack the opening program. No where to send it to anyway. Flashed the bios, bought a new drive, looked high and low for drivers just to find it is plug and play? Deleted the upper filters and lower and restarted. Those are gone. Fixit center didnt work. went through a thousand help and trouble shooters that all count on the drive being in device mgr. Cant locate drivers at hp site evidently they didnt manufacture this dvd/cdrom any more than you or me. Is this a hardware or software issue? Drive boot option is in bios, however it states only dvd/cd rom and not actual name, such as AD-7560A. Computer is a hp pavilion dv6809wm and dvd/cdrom says hp on the sticker and mic. Who makes this junk? Any way, I could sure use some pointers. will you help? thanks for the time jls.