New Pc isnt posting, asking for proper boot device

So I just finished building my pc and its not posting, instead it is asking me to insert a proper boot device or insert boot media in selected boot device and press any key.

I am getting HD activity LEDs when I hit reset.

ASrock z77 extreme 4
i5 3570k
no gpu

What does it mean and what do i do?
3 answers Last reply
More about isnt posting proper boot device
  1. Are any disk drives connected? Are you able to get into the BIOS? If it's giving you that message, I think it's already cleared the BIOS and is trying to boot but not finding any drive capable of doing so.
  2. Yeah, that is what happened. installing windows now ty
  3. You're welcome - good luck with your new build.
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