CD-ROM drive does not work with upgraded OS due to hardware resource conflict.
Cause:
Hardware resource conflict between the CD-ROM and another device prevents the CD-ROM drive from operating properly.
Solution:
Open the 'Device Manager' and select the CD-ROM driver. Change the DMA settings for the device conflicting with CD-ROM to unassigned DMA values and restart Windows 95.
1) Open the 'Device Manager' and select the 'View devices by type' radio button.
Device Manager
2) Double-click on 'CDROM' in the 'View devices by type' list box.
3) Double-click on the CD-ROM drivers. (The CD-ROM driver 'Properties' dialog box appears.)
CD-ROM 'Properties' dialog box
4) Click the 'General' tab and view the 'Device status' area to determine what device is conflicting with CD-ROM drive controller and which resource value is in conflict.
5) Double-click on device type conflicting with the CD-ROM drive in the list box.
6) Double-click on the driver for the device type conflicting with the CD-ROM drive . (The device driver 'Properties' dialog box appears.)
An example device 'Properties' dialog box
7) Click on the 'Resources' tab and if the 'Use automatic settings' check box is selected, clear it.
8) Select the resource in the 'Resource settings' list box and press on 'Change Setting...'.
NOTE: If the 'No Modifications Allowed' message box appears, this resource cannot be changed.
'No Modifications Allowed' dialog box
9) Select a new value from the list of available unassigned resources in the pull down list box and then press 'OK'.
NOTE: If the device is not plug-and-play, you will have to set the resources using hardware jumpers before the resource value can be changed.
10) Restart Windows 95 for the change to take effect.
NOTE: To test CD-ROM drive, View the file list for a CD-ROM.
