There is a small hole on the front of the drive, this is for emergency opening of the tray. Use a straightened fairly thick paper-clip and push gently but firmly into that hole - the tray will then open. Make sure first, that the drive is not spinning.
Check that the cables and leads are all firmly connected.
The only driver required by optical drives is the basic Windows CDROM driver which is installed automatically after Finding New Hardware - the functions are controlled, in the case of rewriters, by burning software such as Nero.