Hello all,
 
Since yesterday I have downloaded the nvidia surround drivers 258.69 for Win 7 64 bits. My setup has been working great with my tripple -SLi 480's sofar. 
 
Now since I wanted to start surround gaming (3x Acer GD245HQ one monitor per GTX-480) I installed the nvidia drivers, but during gaming I seem to get USB errors. My keyboard (Logitech G19 starts to go on/off) and same for my USB mouse. It is as if the USB devices are continuously resetting. Shortly after my PC freezes up. I have to do a hard reboot, and then during post it comes back with no keyboards detected. I then need to plug in my ps/2 keyboard and let it boot until it refreshes the logitech G19 USB drivers, and then it work again. This only happens when playing games, under desktop it's working fine.
 
I have tried everything (also ICH voltage increase)... but issue remains. I re-moved one of the GTX480, so running in dual SLI it works perfectly. The third card is not defective, as the USB problem when running 3xSli Surround remains even with different cards.
 
Anyone has run into this issue before?
 
Microsoft Windows 7 64bits Ultimate
Antec Multimedia Station Premier
WD Caviar Black 1 TB, 7200 Rpm, 64 MB, Sata III/600
NZXT Sentry LX Zwart, 2 X 5,25 Inch
Asus Xonar HDAV1.3 Deluxe Retail
Plextor PX-B940SA 8 X, 12 X, 2 X, SATA, Retail, Zwart
3x Acer GD245HQbid (3D Vision Ready) 23.6 Inch / 59.94 Cm, 2 Ms, Zwart
2x Corsair Nova ,incl 3.5" Bracket 128 GB, S-ATA, 195 Mb's, 270 Mb's in RAID0
Intel Core I7 980X Extreme Edition 3.33 GHz, 6x 256kb, Boxed
EVGA X58 3x SLI Classified
SilverStone Strider 1500 Watt, 20+24 Pins, 80 Plus Rating
Corsair Obsidian Series 800D - No PSU, Black, Big Tower Zwart
Logitech Speakerset Z-5500 5.1, Zilver / Zwart
3x PoV GeForce GTX 480 1536 MB
3x Corsair Dominator GT 4 GB, PC3-16000, 2000 MHz, 8, Non-ECC, Kit Of 2
nVIDIA GeForce 3D Vision Kit
Logitech G13+G9x+G19

Are you using the front USB's or rear?

Also just to be complete, the 3 GTX480 are in PCIex8 formation. I tried 1x16 and 2x8, but also same issue.

Are you OC'd? Have you tried it without OC?

For those who are experiencing USB issues

I had the same problems but with an ASUS mobo, turns out, they were caused by my iPhone, which when connected, because i didnt have the latest iTunes, kept screwing with the USB ports (dont ask me why). They kept turning on and off, also (just like in your case) i couldnt get it to recognize my mouse and keyboard again, only after a hard reset. I had to install the latest iTunes or uninstall it completely in order to solve this issue. Mb u dont have/use an iPhone/iPod/iPad/etc. but if u do have another USB peripheral connected and it dosnt have the latest drivers and is something like a phone, because it dosnt have all of its software (for example, modem software) installed, it could scramble the USB ports for some retarded reason. I know this sounds VERY retarded, but it actually is true. 

Hope it helps.

rohiet

Happy camper now..... now I can really enjoy my triple SLI + 3 screen setup in 3D!! BFBC2 looks magnificient, although since the
latest patch they broke the crosshair :-(

Game updates... they always give a little and take a little, don't they?