Inspiron 1520 - The device in the system modular bay cannot be identified

Hi, my laptop is Dell Inspiron 1520.

I am recieving an error message before the BIOS loads:

"The device in the system modular bay cannot be identified. It may not be completely inserted or may have some other problem. Please read and complete the following steps.

1. Press the device completely and firmly into the bay.
2. Press the ESC-key -- wait for the system to power down.
3. Press the power button to retry detecting the device."

I've unistalled my CD/DVD driver (Toshiba MK1637GSX ATA) and reinstalled it; I've run Microsoft's Fix It, all to no avail.

Still, my laptop suddenly stopped recognizing my CD/DVD drive out of the blue.  Can't even eject it!

HELP!