ASUS z87 pro boot_device_led lighting up -- not POSTing

I'm building my computer for the first time and have it on a workbench to check that everything is ok.

I hooked up my CPU, RAM, GPU and PSU (of course) along with just a keyboard with USB.

The fans spin up and the LEDs flash around the board but then it stops and stays red on BOOT_DEVICE_LED with a q-code of 99.

I'm not sure what to do at this point...anyone have any suggestions? Let me know if I need to post more info.

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More about asus z87 pro boot device led lighting posting
  1. Best answer
    Figured it out... I was using the HDMI port on the mobo instead of the connected video card... duh!
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