Originally Posted by Arniebomba
Since this involves a Lightning bios, i thought i might as well give it a try over here because I cant figure this one out....
I am running two GTX680 TOP cards in SLi for some time now. A few months ago i sold one card thinking i wanted to go 2x690, but i didnt and bought a new 680Top card again.
The "old" cards were once provided with the unlocked LN2 bios. No problems with flashing what so ever and also no problems changing back to the original TOP bios.
Two days ago i flashed the bios of the two cards to the NEW LN2 bios (80.04.28.00.3A). Using the same USB stick as i used before, only with the new LN2 bios. It worked fine.
But..when i try to change the bios to ANY other bios file now, it gives me an error. I can see the GPU in the device manager, but it gives a "!". I cant work in Sli and GPU-Z shows one PCIe 16x3.0 and one 16x1.1. Also, when i start my pc, my screen will go blank and say "not connected" and then comes back and works fine..but only with one GPU and with all the mentioned issues..
I've tried installing about 5 different bios files now, including the original TOP bios. I've changed back and forward to different nVidia drivers. But nothing seems to work. The only way i can get back to a perfectly fine working setup, with no errors, no 2 sec blank screen and with SLi, is when i flash to the new LN2 bios wich i mentioned.
I also completely reinstalled Windos. No changes.
Updated the motherboard BIOS. At first i could select SLI setting, but when i apply them, the system freezed and after two attempts.. No changes and the same problems
Any input to figure this one out?
Rampage 4 Gene