General Discussions

[RPX100]

Problem:

New PC build will not POST when NVMe SSD (GP-ASM2NE6200TTTD) is installed in PCIe 4.0 M.2 slot.

Installing CPU + RAM + SSD only will result in no POST and it wont even check for the missing GPU.

Removing the SSD with CPU + RAM installed will yield the expected VGA missing beeping sounds and VGA debug LED on.

Placing the same SSD into the slower PCIe 3.0 slot will also yield the expected VGA missing beeping sounds.

- CPU: AMD Ryzen 7 3800XT (8c,16t)

- RAM: G.Skill Ripjaws V 3600 MHz CL16

- MB: MSI B550-A Pro (PCIe 4.0 support)

- PSU: 650W, 25A+ 3,3V, 25A+ 5V

- BIOS: current version: AGESA ComboAm4v2PI 1.1.0.0 Patch C (MSI BIOS 7C56vA4)

more details:

- The MSI mainboard has EZ debug LED (CPU, RAM, VGA, BOOT) and 2 M.2 slots.

- 1st M.2 slot is PCIe 4.0x4 (connected to the CPU PCIe lanes)

- 2nd M.2 slot is PCIe 3.0x4 (connected to the chipset PCIe lanes)

When the SSD Gigabyte Aorus 2TB (GP-ASM2NE6200TTTD) is connected to the 1st M.2 slot,

the system will not POST/BOOT and the CPU debug LED will stay on.

I can NOT enter BIOS with SSD in 1st M.2 slot. (PCIe 4.0 CPU lanes)

The SSD is working fine in the other slot. (PCIe 3.0 chipset lanes)

I can only enter BIOS when connected to 2nd slot (PCIe 3.0)

and the SSD will show up in BIOS and can be selected (only on PCIe 3.0 slot).

I have also tested another SSD (Kingston KC2500) in the first slot and it is working fine.

So the slot is working too. At least with a PCIe 3.0 SSD...

I have tried different BIOS versions including the latest AGESA ComboAm4v2PI 1.1.0.0 Patch C (MSI BIOS 7C56vA4).

conclusion:

- M.2 slot is working (tested with another SSD)

- SSD (GP-ASM2NE6200TTTD) is working in PCIe 3.0 slot

- BIOS version is up to date (for Ryzen 3000 series)

What can I do to make it run in PCIe 4.0 M.2 slot?

Any suggestions or help to solve this would be nice. Thank you!