Dear Sir,
I did not find my solution from previous questions and answers.
I am using two windows o.s in my computer 1. window 98 and 2. windows XP.
In both of these windows CD Rom has disappeared.
I am unable to find out cd rom in my computer.
Before that after switching off my computer I checked the connections of this drive in my CPU and then restarted my computer but of no use.
I am using P4 system with 256 RAM.
Sometimes when I restart my computer a message window says " slave drive- ATAPI incompatible"
I do not know whether this has any association with CD Rom drive.
How this problem can be resolved ?
Thanks and regard.
Ramesh Mishra

First off, why are you using two operating systems? The XP is far superior to windows 98. Anyway, I think you need to reload your drivers for this CD ROM. This disappearance could have been the result of the two different operating systems.

Dear Twinkiedooter,
The problem is not due to two operating system.
It was working all right earlier. All of a sudden one day that it has disappeared from "My computer"
I opened my cpu and took out cables and plugged it but it was of no use.
One more problem I would like to add . My mouse gets inactive sometime .After restarting the computer it starts working.

However is there any solution to resolve these problems.
If at all driver need to be downloaded then from where I shall get it ?
Thanks and regards.
Ramesh Mishra

Is the cd rom seen in the device mgr?
Start, settings, control panel, system, hardware tab, device mgr, is there yellow marks next to cd rom or is the cd rom even there

If it is there and there are yellow marks, right click on it and choose uninstall and say OK
Now close all windows and restart the PC

Post back

Dear Seahwk,
Under device manager tab, I got disk drive. Within this disk drive there is Samsung sv4012H which is not marked yellow.
There is no CD ROM under the device manager tab.
This is all in windows xp.
Thanks and regards.
Ramesh Mishra

Is this a dual boot? Or virtual OS? If virtual OS, which is the primary system the computer boots to?

Well, if there is no cd rom in either OS device mgr

1 - check your bios when you start the system to see if the bios recognizes a cd rom attached to the system

If seen in the bios, go to control panel and choose the add new hardware icon to see if it can be detected

Really need to know if dual boot or virtual os though

Have you entered the bios, most computers you press the delete key when the computer is starting.

Check and see if the cd rom has been disabled.
If you do not see it listed, then select cd and then auto. It should appear.

If you have recently changed your hard drive, and the cd and hard drive use the same Ide cable, make sure the cd is set to slave.