Re: GTX295 only showing single GPU.
I had this problem also w/ 182.50 driver a while ago. It was weird b/c all other drivers showed 4 gpus, so what I would do is try other drivers. If that doesn't work, reinstall Vista/W7 after formatting your HDD. If that fails then try your card on a different machine to make sure it's the card not the mobo or anything else.
J1 \ J2
CPU: i7 940 @ 3.34GHz \ QX6700 @ 2.66GHz
Mobo: EVGA x58 SLI E758 \ Asus nforce 590i
RAM: OCZ DDR3 1600MHz 12GB @ 9-9-9-24 \ Micron DDR2 667MHz 4GB @ 5-5-5-15
HDD: 4TB WD C (2x Black, 1x Green) \ 4.5TB WD C (2x Black, 2x Green)
GPU: EVGA Geforce GTX 295 quad SLI \ BFG Geforce 8800 GTX
M & K: L NEW! G19 & G500 \ G15 & G5
SC: Creative X-Fi Fatal1ty Pro
Headset: NEW! ATH-AD900 \ SS 5H V2 USB
PSU: Tt Toughpower 1200w \ CM RPP 750w
Case: A1200 \ Dell XPS 710
LCD: Dell U2410 H-IPS + LG L246WP-BN 24" P-MVA \ LG W2243T-PF 21.5" TN 1080p
OS: Genuine W7 x64 Pro \ "
Cooler: Megahalems + 2x Scythe S-F push/pull E/W \ TRUE 120 + 1x tr push