Error code

ASUS B0

ASUSB0
POST Code· Shown on the motherboard's 2-digit Debug Display during boot.

What it means

Boot up device abnormal.

How to fix it

  1. Re-connect SATA cable and hard disk.
  2. Check M.2 SSD connection.

Not affiliated with ASUS. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.