New Build, SLI problems with Vista Ult x64

Good morning everyone,

This seems to be a knowledgable board, so I thought I would present my questions/problems to you all. I ran XP (32bit) With my single 8800gtx fine, and yesterday upgraded to 8800gtx's in SLI, along with the Vista Ultimate x64 upgrade. I unistalled the drivers from the video card, and the newest drivers after I installed the SLI setup. I don't remember the numbers but I tried the newest beta and certified drivers for Vista 64.

When I play WoW (Shame on me I know), The game runs great and incredibley fast, but I get crashes when running it in SLI mode and running 2 versions of WoW at the same time (I previously had done this without SLI before with no problems in XP). That was fine with me, I just switched it back to Single GPU mode for WoW, and all was fine, and I just switched it back to single GPU and I can run 2 copies of WoW perfecetly now.

My real problem lies when I try to play Crysis. The game is patched, but when I get to load up the first level, most of the time my screen will go black and say "Monitor Entering Power save Mode," and every once in a while it will start the first level, then hard lock after about 5 seconds. The power save seems to be the main problem.

I tried disabling the monitor power save all together, but even with it disabled it still happens. Anyone have any thoughts? I think perhaps its just the drivers, but it's becomming quite frustrating to me, as I've tried the newest betas/normals.

Computer Specs:

Intel e8400
4Gigs Corsairs XMS2 DDR2 800
eVGA 8800GTX in SLI
Corsair 750w PSU

Hi

You say that when running Crysis on 2 cards in SLI, the monitor switches off as in power saving mode? I've had a similar problem when gaming if i have Nv Tune's vertical sync locked to on but my monitor's refresh rate is lower than the game's: i find then that the monitor cannot display at the required refresh rate and shuts down, almost like in a power saving mode.
Check you NV Tune's vertical sync settings and the triple buffer setting FOR BOTH CARDS - it might not do anything but you never know.

I used 2x XFX Nvidia GF9600 XXX in M59SLI-S5 and plugged 6 pins PCIE cable from PSU to each card plus 4pin Molex from PSU to PCIE_12V to give 2nd card more power - it worked fine, last time it was BSOD as I found it was latest BIOS was corrupt and emailed to Gigabyte about it - Im now BIOS F7 that worked fine all way - it either drivers or BIOS that may have buggy.. did you use the new Forceware 174.74?? I used and it seem worked all right.

Have you installed all the updates and service pack 1?

Yes Ive updated Vista SP1 (121.5MB) and then few weeks later bought 2 cards to installed and the plugged SLi bridge and then installed Nvidia driver 174.74 (1st April 2008) and enabled Sli from Nvidia Control Panel that worked prefect - Ive all updated already - I plugged PCIE 6 pins cable from PSU directly to each card plus form PSU to PCIE_12v 4-pin Molex that give 2nd card extra power... no problems since updated - it went smooth --- let me know how are you getting on with your own.

it worked if you updated latest driver from Nvidia also you may need update BIOS as well - Ive reupdated BIOS F8 again that worked fine cos I forgot to rise the RAM voltage (silly me!)... that seem great run