try all three in order:
1. try reseating the Ribbon cable(IDE) and go to the BIOS and check if its set to AUTO or CD-ROM
if that doesn't work try a different ribbon cable and see if that works.
2. > Go into device manager & uninstall the device, then click
> action > scan for
> hardware changes to reinstall the driver.
3. If non of the 2 work go here and follow their steps: