Bios detects CD Rom but Windows does not?

[Zonon]

I have two motherboards that detect the CD Rom in the bios, but when Win 98 (and98se) comes up it does not see the CD Rom drive. I have used other CD Rom and CDRW with the same results. I even tried different hard drives. I have also used sec. and master settings/conections and different ribbon cables. What could be the problem?

 

[bacillus]

Both Windows95 and 98 have a bug: Sometimes, Windows can't work out the IDE controller, and therefore ceases to use its 32-bit drivers for it.

Symptoms:
- CDROM drive disappears
- In device manager, both "Primary IDE controller" and "Secondary IDE controller" appear with a yellow exclamation mark
- In device manager under "performance", all HD's appear in compatibility mode.

Solution:
Click Start, then Run... , and type regedit
Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\IOS
You should see a value named "NoIDE". Delete it, close regedit and reboot!