Crysis keeps crashing, need major help!?

I just built a new pc { ASUS Sabertooth X58 LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard, EVGA GTX 580, a Corsair 750 watts power supply, Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) 4 x 256KB L2 Cache 8MB L3 Cache LGA 1155 95W Quad-Core Desktop Processor,Seagate Barracuda XT ST32000641AS 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive, CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 15000) }. I just downloaded Crysis from Steam and the game crashes every time I try to play it. If I adjust any of the settings from high to low or even just click on something it crashes. All of my drivers are up to date as well so I have I am completely stumped. Can anyone tell me how to fix this? Also, every time I start Crysis it is not in full screen mode; I am using an LED tv as a monitor, but I play every other game on it in full screen mode.Crysis keeps crashing, need major help!?
Does it crash on other games?? I would try reinstalling Crysis, and see if you get the same result with other higher end gamesCrysis keeps crashing, need major help!?
DUDE HOW CAN U PUT I7 2600K ON 1366 MOBO,socket for i7 is 1155,

ALSO 32 bit supports 4GB.IF U R USING IT THEN ADDITIONAL 4GB GOES WASTECrysis keeps crashing, need major help!?
ooo.... Its so sad for such a good gaming rig to crash Crysis. You better get a premuim and genuine Crysis., its maybe due to Virus.