Check the drive is working by trying a different type of disc. If its still not working try to uninstall the drive then restart the computer and windows will put the drivers back in. This might be ok because mine did this a while ago. It started work ok but shortly after the drive give up the ghost So that might be the problem.
whats on the disc you should only need to erase it even a quick erase should suffice. You could try Imgburn Its free click here install it then click on discovery .This will give all the details about the disc then >Tools >drive >erase it will tell you if you need to do a full erase if not quick erase will suffice