So, the other day I was playing Crysis, got to the final level, and navigating the ship, I ended up looking into one of the sparking ares and the system crashed. Ever since then, when I try to run Crysis from Steam, it starts to run, the screen goes black as it should, but then gets lighter and I get the message "Crysis has stopped working." I know my computer can run Crysis very well on high settings and decent on very high. I have tried reinstalling it, deleting everything from the Crysis folder, and running it in every compatibility, It still won't start, I even went into Windows Firewall and Norton Internet Security to make sure that Crysis was not blocked. Anyone know how I can fix this?
Also, strangely enough, Crysis Warhead works absolutely fine, but I am playing it from disc, while Crysis original is from Steam. Does this mean I have to buy the disc version for the original Crysis as well?

could you post up your full system specs inc operating system

and also what detail you play on

Flamers

I play everything set to high.
AMD Phenom II x4 955 Black Edition
ASUS M4A79T Deluxe Motherboard
XFX Radeon HD 4890
2GB Corsair 1333mhz RAM
Coolermaster 850W Silent Power Supply
500GB Barricuda SATA Hard Drive
DVD Disc Reader/Writer

I am using Windows 7 64-Bit home Premium.

try and use the -dx9 tag on you shortcut

Flamers