shunt

Ok so I was just wondering if any one else had this problem or knows how to fix it, my bios detects my cd-rom drives and so does windows but when a cd is inserted it does not detect a disk in the drive. I have double checked the jumpers, bios settings and settings in windows I'm thinking its a problem in windows because I have even put cd-rom drives in external cases and tested them. Any help would be apriciated thanks