Re: GFWL won't update, Arkham City unplayable. Halp
Its fuzzy, but I think I had this problem doing a fresh windows install. When installing GFWL (or it might have been direct x, again its fuzzy) it started erroring out requiring services and dll's that were part of the OS and impossible to NOT have. ^^ I ended up re installing windows again.
Did you completely uninstall the game and GFWL and start from scratch again? If that doesn't work then you may have to go the whole OS route. It is hard to tell whats wrong if it doesn't spit out error you can look up.
Mobo: EVGA 122-ck-nf68 680i sli, CPU: C2D Quad 6600, Video: EVGA GTX 460 1gb SC, Sound: X-fi gaming, Windows 7, Antec P180b,Thermalright Ultra-120 HSF, Antec TruPower TP3-650, 4 Gigs RAM