try dropping your firewall.
delete your shaders found under your profile mygames/crysis/profiles/NAME
when you run mwll from desktop, run as admin.
when in menu lower specs to low.
click multiplayer
click internet
put in your login info.
if you don't have a log in for this.. exit.. run crysis, and create a new act while in crysis, Exit and run MWLL
sort by ping. update servers.
join the lowest game.
I will assume you have a legit copy with a key,, otherwize your wasting everyones time here.