PowerEdge: R750 not Boot and Have an Error "NvmExpress: NVMe device not ready"

PowerEdge R750 not boots and has an error "NvmExpress: NVMe device not ready."

Figure 1

1. TSR log checks the slot6 and 7 NVMe SSDs can detect, PCIe slot2 installed a third card.
   Figure 2
   
   
   
   

2. Lifecycle Log check has a device not detected: NVIDIA Network Adapter - A0:XX:XX:XX:XX:FB(NIC in Slot 2 Port 2), New device detected: PCIeSSD(PCIe SSD in Slot 2)
   Figure 3
   

It seems the PCIe slot2 third card Port 2 detected a wrong device caused by not boot.

The user replaces the PCIe slot2 third card, and the issue was solved.