Might be:Bios setting to PCI GEN1 (advanced menu) and Above 4G decoding ON (it is in the Boot menu)
Update bios first
To make a fresh start pull Power Plug . So Bios lights are all out.
Thanks for your reply mate, I really appreciate it.
I have enabled the - "
Above 4G decoding ON" option in the advanced settings.
Will try the other option too ('
PCI GEN1')
* Having no monitor is definitely not the problem right?
I will update the BIOS as soon as I can.
Thanks Mate.
Reg.
I have same mobo with 5 GPUs, sometimes there is problem, but I have only 4G above and PCI-E set to auto.
I have pluged monitor in so... My screen sometimes doesn't show anything, but boot in to the bios and switch primary gpu to auto works.