HOW COME MY PC IS NOT READING THE DVD ROM WHEN THERE WAS NO PROBLEM BEFORE:confused:
1 - open the chassis and reseat the cable - both ends
2 - go into system BIOS and make sure it is enabled
3 - make sure the appropriate driver is installed
If this does not resolve it, put in another drive and see if it is recognized or move the suspect drive to another PC
This will help you determine if the drive or the connection is potentially bad.
Hope this helps