After problems with oblivion GOTY that seemed to have no solution, I decided to play it on another computer I used too have It installed on. When I put the disc it acts as if it is still installed, so naturally I open the folder of the disc and run the setup.exe to uninstall it (to re-install it). But when I do a message comes up that says No disc inserted and to please insert the GOTY disc and click retry. Any ideas?

This is most likely an issue with my disc driver because it displays the same message when I insert my Fallout 3 disc.