Hardware

cd rom drives are cheap now, throw your old one in the trash and buy a new one.....

sorry for being crude.... but i'm sure this is the right answer....

Im sure that the wrong answer..
Im quite sure you may find the cable at the rear of the cdrom is lose or slightly disconnected if this isnt the issue try one of those laser lens cleaners. this is a major part that is often forgotten in computers today I dont think it would be dual boot orientated. as they work seperately from each other I do take it that these operating systems are installed on seperate partitions?

Im sure that the wrong answer..
Im quite sure you may find the cable at the rear of the cdrom is lose or slightly disconnected if this isnt the issue try one of those laser lens cleaners. this is a major part that is often forgotten in computers today I dont think it would be dual boot orientated. as they work seperately from each other I do take it that these operating systems are installed on seperate partitions?

This may be an unrelated issue with dual boot
First make sure that your cables are connected to the cd-rom properly,also check the cable from the cd-rom to your sound card is connected.

Open the Device Manage and check the Controllers to seed iftheir is an exclamation mark,if os reinstall the software drivers for it

Check the list for the cd-rom,you can then try reinstalling the software drivers

check all the cables of your cd-rom ,they must have got loose.check the device manager for any IRQ problem.
try installing the drivers for the specific drive you have.This might work !
might be you have replaced your cmos battery recently and forgt to do some changes in the cmos setup.
if still there is a problem then try reloading the OS .