So I just got halo 2 for PC, booted it up for the first time and noticed something odd when i loaded up the armory mission. For some reason I am perpetually walking forward. I've checked and none of the keys on my keyboard are stuck or anything, it even happens when i have my keyboard disconnected, just for some reason i can't stop walking forward, everything else works perfectly, just that one issue. Can anyone offer me some help with this, it makes playing rather difficult