DVD DRIVES NOT SHOWN IN DEVICE MANAGER or BIOS

G

Guest

Guest
I have two DVD drives.A dvd combo drive (make : SONY) and a DVD writer (make: LG) which worked fine. now suddenly its not being detected at all by the computer.
Its not Shown in BIOS or Device Manager.
But the LED flashes while POST occurs n it shows that the DVD recieves power cos it opens and all.

Hw can i resolve this???