I have 4 mobos powering 18-24 280x
The first 2 machines are running 6 GPU on EVGA Z68 FTW
One of these has 3 GPU installed one is crashed on boot saying "not enough resources" the next crashes on cgminer launch and then crashes cgminer moments later in the attempt to restart it, currently that machine can only mine with -d 0 command at about 500 kh
The next machine has 6 plugged in with 5 in the devices manager and crashes mid video driver install windows reboots several times with no display until it reverts to known working config from pre-install of video drivers
The other 2 machines are MSI Z77A-G45 with 3 x GPU I have yet successfully boot these as I have been focusing on the EVGAs which can run more, they will be 6x when I get more risers, yet i would like these running 3x tell the risers arrive.
All of my problems that i can’t quickly get past have to do with drivers crashing.

Specs:
celeron G1610 x4
8gb RAM x4
4x 860w corsair PSU for MOBO and riser power
8x 1000w Antec PSU for GPUs
2x EVGA z68 FTW mobos
2x MSI Z77A-G45
4x 64gb SSDs
4x Windows 8.1
24x R9 280x various manufacturers (Asus, Sapphire, Gigabyte, XFX, MSI, Club, Powercolor)
enough 16x to 16x PCI-E powered risers (all powered risers on all GPUs)
1x USB mouse/keyboard 1x DVI-D/D-Sub Monitor