ERROR when start FIFA 09


Club Supporter
hey i have problem that when i start my fifa 09 it say reinstall fifa 09 it was working fine before i install my windows xp when i format my xp it is giving an error that reinstall fifa 09 .i have my fida 09 in my D drive also my fifa 10 demo is installed in d drive fifa 10 demo is working fine but fifa 09 says reinstall it anybody can help me that i play my fifa 09 without installing againg i this it have registry files missing .