Issues with M.2 SSD startup
Issues with M.2 SSD startup
The alternative port accommodates both SATA and PCIe connections. Testing it may clarify the issue... Do you have anything in the PCIe slot 4?
Installed the graphics card into the alternate PCIe slot and placed the M.2 drive in its respective slot. The system started up, but the M.2 device wasn't detected in the BIOS. I believe adjusting settings might resolve the issue.
Ah yes, only 2 long slots. See the mobo manual, the bottom PCIe slot (PCIE4) conflicts with the top m.2 slot, if a drive is in it the PCIE4 slot gets disabled, hence your black screen. Also the bottom PCIe is only x4 even if the connector is full length, so you want the GPU in the top one (PCIE2). And then you should be able to plug your m.2 in the top slot, which is x4. the bottom m.2 is only x2. That's how it should be.
Ensure you open Disk Manager, set up a partition, format it, and it will appear in Windows.