Try to uninstall both drives through Device Manager.
Restart computer. They'll be automatically reinstalled.
If the above doesn't help...
Try one of these:
1.
http://support.microsoft.com/kb/314060or...
2. Download, and run
Restore Missing CD Drive patchDouble click on
cdgone.zip to unzip it.
Right click on
cdgone.reg, click
Merge.
Accept registry merge.
or...
3. Go to
Device Manager, click a "+" sign next to
IDE ATA/ATAPI Controllers.
You'll see two items:
- ATA Channel0 (or Primary Channel)
- ATA Channel1 (or Secondary Channel)
Right click on each of them, and click
Uninstall. Confirm.
Restart Windows. They'll be automatically reinstalled.
Still nothing? Both drives are dead.