Originally Posted by nekrosoft13
my replacement G7 is working fine too
but i need to get rid of G15 if i want to play FEAR above 15fps
That's what the problem is?! Wow..I wouldn't have guessed. That does make me think of a vista tweak I saw a while back though, diabling all unused HIDs in the device manager. he claimed it cleared up a lot of his problems.
Either way, glad you found the problem!