Intel Motherboards - ASRock Z170 PRO4S will not POST

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ASRock Z170 PRO4S will not POST

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=2326
Printed Date: 06 Nov 2025 at 3:54pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: ASRock Z170 PRO4S will not POST

Posted By: Richard Ryder
Subject: ASRock Z170 PRO4S will not POST
Date Posted: 29 Mar 2016 at 9:24am

New Motherboard, Intel I5 6600x CPU, LEPR B1000M P/S, 16G DDR4 4M4B3000C15 Corsair memory.

When I push the power button the P/S comes on and the cpu fan powers up, also the BluRay player's light flashes, but there is no HDMI display. I tested the P/S and it checked out. I tried new memory also, but still no luck. I don't know where to go from here. Any Ideas?

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Rick Ryder

Replies:

Posted By: koolspaz
Date Posted: 29 Mar 2016 at 1:31pm

Hi! Same issue here. Just set up a new build.

ASRock Z170M Pro4S ( http://66.226.78.22/downloadsite/Manual/Z170M%20Pro4S.pdf" rel="nofollow - user manual )
Corsair Carbide 300R Case (CC-9011017-WW)
Antec EA-550 Platinum 550 Power Supply
Intel Core i5-6500 6M Skylake Quad-Core 3.2 GHz LGA 1151 65W (BX80662I56500)
2x G.SKILL NT Series 8GB 288-Pin DDR4 SDRAM 2133 PC4 17000 (F4-2133C15S-8GNT)
Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD (MZ-75E500B/AM)
BenQ GL2460HM 24" Monitor

I followed these steps:

CPU connected, thermal paste applied, heat sink/fan locked in
CPU fan plugged in to CPU_FAN1
case fans plugged in to CHA_FAN1 and CHA_FAN2
case power/reset buttons and LEDs plugged in to PANEL1
case headphone/mic plugged in to HD_AUDIO1
RAM plugged in to DDR4_A2 and DDR4_B2
SSD plugged in to SATA3_0
power supply plugged in to ATXPWR1, ATX12V1, SSD, and graphics card
power supply switched on and plugged in to wall
mouse and keyboard plugged in to USB7 and USB8
monitor plugged in to HDMI1 (also tried from graphics card)

When I press the case power button, the case power LED and case/cpu fans turn on. Nothing is displayed on the monitor, and there are no lights on the mobo itself. Tested the monitor and cable, they display HDMI fine on another machine.

How can I troubleshoot further?

Do I need to clear CMOS or do something with the battery? Didn't touch the CLRMOS1 jumper.

Thanks!

Posted By: koolspaz
Date Posted: 30 Mar 2016 at 11:18am

UPDATE: Solved the issue by moving RAM to A1 and B1 (although the A2-B2 config is priority 1 in the manual) :D

After that, it POSTs and everything is powered.