COD4 HARD Lockups

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I've been having issues with COD4 locking up. It locks up randomly. I've proved it's not an overheating issue by playing Crysis on full graphics in a high resolution for two hours. So it's definitely not a heat issue. Joe has informed me that driver lock ups will be recognized and will keep the OS from kernel panic or hard system locks. My only other guess is SoundMAX (on-board high definition 7.1 sound). It's given me numerous problems in several games. I've killed all background processes. I have not killed PunkBusterA and B because I play professionally on CEVO and CAL. Also, Crysis uses PunkBuster.

Just for grins I checked my CPU/GPU/MOBO temps and they all appear well within operational ranges. I have no add-ins except for my graphics card: EVGA GeForce GTX 280. I'm on the i7 processor with the P6T Deluxe motherboard. I use a SATA Hard Drive (I was thinking about firmware updates, but I doubt it's a hard drive issue since Crysis runs for hours). I'm using a Sony CD/DVD RW ROM. My OS is Vista 64 Ultimate. I'm using a USB mouse/keyboard and DELL Flat Panel (DVI).

I've returned the BIOS to it's default settings (I've only changed fan speed and heat monitoring options) and have stressed tested the system for hardware failure. Nothing. I've even flashed the RAM and put an OHM meter on the power supply to make sure there's no fluctuation. I did have cold cathodes installed but I removed them when the problem started showing up just to make sure.

I was about to update my BIOS but the ASUS update procedure is somewhat flaky and my bios version says it is MUCH higher than their public release?! Any guesses on that? I will be re-installing the game although I'm extremely doubtful that it has anything to do with the game files/registry since the OS should recognize problems and boot me out of the game. The lockup is ALWAYS accompanied by a looping sound although there are never any graphical errors (dots, smears, lines, blurs, odd colors, etc.). I have attempted running in lower resolutions just for grins. Also, I used the 64bit installer from Direct2Drive (which did give me issues at first). I am pretty much out of ideas. I'll remove and re-install my drivers tonight for the GTX280 as well as possibly update (downgrade?!) my MOBO/BIOS.

Any input is welcome. I am very experienced so feel free to throw tough troubleshooting procedures at me. If I don't know how to do it I will Google it and find out.

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EN4CER

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