ASRock Extreme 4 Z77 - A6 Error

[mookial]

I just did my external build as shown in the Newegg video. I'm a first time builder and plugged everything in like shown: CPU, aftermarket heatsink, GFX card and memory. When I power the mobo on the little red dr. debug shows error "A6". This error says "SCSI Detect". Can someone please help me? All the fans are spinning and everything seems to be working fine, I just don't say anything on the screen when powered on.

 

[dabom45]

it means you have o system to boot too