We have SYS-7049GP-TRT (X11DPG-QT6) that we installed Windows 11. System boots up fine when there is no Nvidia A100 installed. Once, we installed 2 x Nvidia A100, the system doesn't boot.
Solution to try:
1) Nvidia Data Center driver.
https://www.nvidia.com/en-us/drivers/details/225593/
2) If driver is installed correctly, check the Above 4G setting in BIOS
(MMIO High Base default is 56T, change it to 40T, 24T, 16T) and see if it makes any difference.
(MMIO High Granularity size default = 256G, change it to 1024G and see it makes any difference)