Help! Can't see video after loading driver

[Jmattson]

Hi guys
I have a big problem with both of my rig.
after the boot and the win (7) loading screen the monitor go in stand by..
I tried change the driver, change the video card, the slot, format win.. nothing work.. the only way to use the pc is when the driver is unistalled or in temporaly mode

the incredible arrive when I turn off the other rig and after the restart and there is the same problem!!!


my config is 5x750gtx in a rig and 2x750gtx in the other

what can I do?!


thanks

[ElizabethAngel]

which motherboard u are using?

[Jmattson]

an asrock h81 pro btc and an asrock xtreme3