CD-ROM shows as Unknown Device

I replaced the motherboard on my Dell 8200 desktop with the exact same board, more powerful CPU. Popped in the CPU, cards, cables, etc. Machine powered right up, everything was groovy.

Then I tried to play a CD – machine shut down, rebooted. I looked in Devices; everything was there EXCEPT the CD-Rom drives. They were at the bottom of the tree in a grey square labeled Unknown. Inside were the 2 drives, properly labeled but showing as unknown devices. Attempted to reinstall drivers, but machine couldn’t find drivers (do CD-Rom & CD-RW even need drivers?).

Swapped Primary & Secondary IDE cables, no luck. Did an uninstall (of both CDRW & CDROM) & reboot, same thing. Did a safe boot, removed Unknown devices & rebooted, same thing.

Machine is a Dell Dimension 8200, P4 2.8 GHz, 400 fsb, 1024 MHz RDRAM. Drives are an LG CDROM, & TDK Velo 24x10x40 CDRW.

How do I get this thing to recognize my CDROM & CDRW drives correctly?

Thanks & take care,
Hawkeye

 

r u sure you set the master and slave jumpers correctly? the master should be the one at the end of the ribbon cable

 

Also check your BIOS to make sure the secondary controller is enabled.