I am a system's builder and I have built two systems specifically for Crysis. These are 100% CLEAN- FULL installs of windows Vista Ultimate (32bit). My main system is using Nvidia's 680i chipset on an EVGA board and I have two 8800GTX EVGA cards running in SLI. My processor is an Intel EE X6800. Memory is Corsair 8888C4 (2GB) which is on EVGA's QVL approved list. Power supply is MORE then enough. I installed Vista on ONE 150GB WD Raptor hard drive so as not to have RAID problems with Vista. All I did was install Vista (full version), all updates from Microsoft (and of course all motherboard drivers) and then I installed Crysis, Bioshock, the new Call of Duty 4 Demo and Stalker. The video drivers I installed were 169.04 downloaded from EVGA's web Site. Active X is the latest. All games installed pay at the very HIGHEST settings with absolutely no problems whatsoever----EXCEPT Crysis. On my 1920 x 1200 monitor, I have to drop to Medium settings to get Crysis to run at all. This is even after I perform the Crysis system check and it recommends the settings to be VERY HIGH. If I turn on AA, the game will not even start. I then removed the 169.04 drivers the proper way in Vista---and then I always use driver sweeper in safe mode to clean up. My next step was to install the 169.02 drivers---same thing, all games work very well EXCEPT Crysis. Next step was to try older drivers. The current drivers on Nvidia's site are the 163.75 for Vista 32bit. With these drivers I could actually play the game in HIGH settings, but if I turned on AA to ANY setting, I could not even start the game. There is absolutely nothing on this system that is overclocked or tweaked in any way. My PC-Pitstop score is 4785 with no problems detected. Defragmentation was performed after each driver install. Every game worked on the very highest settings---except for Crysis. My second system is not as powerful, but fully capable of playing Crysis. Same thing---all games play very well except Crysis. The 163.75 drivers work much better then the 169.** drivers, and I can't turn on AA AT ALL and even start the game. All I am presenting here are the facts. I can not stress enough that I built these systems with Crysis in mind and I wanted a complete, compatible and uncorrupted setup. Considering the other games worked very, very well but Crysis would not, I can only make the assumption that there is a massive problem with this game. One last thing--I built a system for my Fiance'e who is not into gaming, but does quite a lot of video editing----so the system can handle that. No SLI, just a quad-core Intel, very fast memory (4 Gigs) and an ATI very high-end video card. RAID 1 also. I didn't bother installing the other games, but I installed the Crysis demo, and I downloaded and installed the very latest ATI drivers. SAME THING. I could play Crysis in high settings (but the game ran choppy) and could not even start the game with AA set. Medium quality setting worked best and smoothed out the game. By the way, Crysis recommended--even for this system, very high settings. NADA I don't know what else to say or do. After everything else, I installed 3DMark06 on my main system. On a totally untweaked system---my scores rocked! Crysis will not work for me--that's all I can tell you and I am getting too old to try to find solutions. If it doesn't work "out of the box" I no longer want to fool with it. I am tired of this.