Hi guys I really hope you can help me.
 
I have a new X299 Dark and it does boot when I only have one GPU but as soon as I install the second one it does not boot, it still makes the same beep it does with only one but it's all a blank screen and nothing else.
 
I checked that both GPUs are properly working and the cables from the PSU do work properly when I use them either GPUs.
 
I am guessing something needs to be enabled in the BIOS which by the way is BIOS v.1.28
 
This happens if I try to install them on any of the slots.
 
It is a 10920x processor and two 3090 GPUs with a NVME drive which doesn't have anything on it yet.
 
64GB DDR4 on slots 3,4
 
 
Thank you !
 
Please help me.
 
 
SOLVED UPDATE:
 
 
Moved the NVME Key M Drive to the other slot.
 
Booting properly and NVLINK with 2x3090 XC3 working properly