T7910 Boot Issue with Intel Optane 900P

Hello,

I have a T7910 workstation with 64gb ram 1650 V4 CPU, dell 540-T2 nic, Thunderbolt and nvidia 1060 GPU.

all worked fine until yesterday :)

the symptoms is this:

if the optane present in any slot the boot process not go toward, i can see the dell logo but i cannot reach the boot menu or the bios - the blue line stuck in the middle after i press the F2.

Remove the battery not help, reset jumper also not help.

first idea was optane is death, but i try it with T420 and T5820 and its work well with 100% health and no FS corruption.

Anyones have idea what i can try to fix this issue?

thank you!
Gergely