Author: Xaltar
Subject: ASRockH170M-ITX/ac won't POST
Posted: 01 Apr 2016 at 1:44pm
In my experience the symptoms you are describing can only come from a few possible causes:
Subject: ASRockH170M-ITX/ac won't POST
Posted: 01 Apr 2016 at 1:44pm
In my experience the symptoms you are describing can only come from a few possible causes:
1. A bad PSU
2. A short somewhere
3. No CPU installed/detected
Perform a full CMOS clear as Parsec suggested.
If I pull the CPU from my H170 Combo board and try to power up the system without it I get the exact same result as you. Given you have tried 2 different PSUs and I am assuming you are running the board outside the case as Wardog suggested earlier in the thread I would start with checking the CPU is installed correctly.
Remove the CPU from the board and check for any damaged/bent pins. Check to be sure there is no warping of the CPU itself, this can happen if it is installed in the wrong orientation and clamped down.
If all is well on the CPU front then strip the board down to just the 4 pin power, 24 pin power, 1 stick of RAM is slot A1 or B1 and the CPU.
Let us know how it goes.