I recentely Built a gaming pc, It has a used ASRock z170M pro4s with A new WD 1TB hard drive, Everytime I start the PC up. It asks what to boot from and the only Storage it has is the WD 1tb Hard drive. The hard drive works fine when I choose it and it has no problems with it working. I just makes me choose what to boot from everytime.
CPU: i5 6600k
GPU Gigabyte gaming g1 gtx 970
Storage: WD 1 TB
Mother board: USED Asrock z170M pro4s
CPU: i5 6600k
GPU Gigabyte gaming g1 gtx 970
Storage: WD 1 TB
Mother board: USED Asrock z170M pro4s