Help needed plz!

I face a huuuuuge problem!Somehow yesterday my 2k9 started not to recognise my 2 controllers!I unistalled them and installed them again but nothing!
I changed their usb port but nothing changed again!Can anyone help me?

noone?i downloaded pro10 demo but neither did it recognise it,but resident evil 5 did!how the fuck does that happen?if that helps you,i use a xbox 360 and a a thrustmaster control,plz i cant wait to play 2k9 anymore...