halo 2 not working on 360

for some reason halo 2 from original xbox isn’t working at all on xbox 360 anymore, whenever I put the disc in and press play game a message comes up saying
“the game couldn’t start try downloading the game again”

Do you have backward compatability installed
or did you buy a legitimate hard drive or the region of the game is not compatible like NTSC-J or NTSC or PAL

If not reinstall the xbox software and it should work

If not of the above is applicable try to clean the disc it worked for me

Cheers
Kmteo