Pixel 2 not started: ERROR: Slot Unbootable: Load Error

error slot 2.fastbootfastboot ERROR: Slot Unbootable: Load Error fastboot. Replace the affected adapters. Replace the riser card. (Trained service technicians only) Replace the system board. One of PCI Errors :.

errorslot, Thank you Z440Roger for the reply, The Firepro W7100 was in slot 2. I did find the problem it seems that the card was not seating well on the slot #2. Removing and putting back.