Intel Motherboards - Z370 Extreme4 lights come on but no display/post

Z370 Extreme4 lights come on but no display/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=7761
Printed Date: 07 Aug 2025 at 8:56pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z370 Extreme4 lights come on but no display/post

Posted By: GreenFlag
Subject: Z370 Extreme4 lights come on but no display/post
Date Posted: 21 Feb 2018 at 7:05am

" rel="nofollow - First time building in years. I've assembled the setup outside of the case to make sure it works. The blue lights on the board turn on and stay lit until I power down when I flip the power switch on my PSU, but the 4 pin CPU fan does not come on, and it doesn't appear to start POST or send any image to the display.

I can't find this particular problem listed in any threads, so I hope someone here can provide some direction.

Setup is:

Mobo: ASRock z370 Extreme4

CPU: i7 8700k
CPU fan: Coolermaster Hyper 212 EVO
PSU: Corsair CX650M
RAM: G.Skill NS series 2400 speed 8GB stick x2

Some notes: I have checked the CPU connection as well as the 24 & 8 pin power connections from the PSU. I've tried different RAM configurations as well (as indicated in the board's manual) and tested the video connection via both VGA and HDMI.

This seems like a pretty low-level failure to me, maybe CPU related, but I don't know.

Any advice on what to test next?

Replies:

Posted By: badbri
Date Posted: 21 Feb 2018 at 8:23am

" rel="nofollow - Turning on the PSU will not power up the mobo, it will sit in standby mode until the front panel power button is pushed.
Did you connect a small pushbutton switch to the proper system panel header pins ?
Check your manual, it should be on page 21 (if the online pdf and your manual are the same).
I use an old reset button ripped from an old case just for that purpose.

Posted By: ssyipa
Date Posted: 02 May 2018 at 1:47pm

I've the exact same case, power on the PSU and the MOBO lights turns on, but once I push the power button it powered on normally and the funs run.
but also no display or post check appear, no "Bee" from the PC speaker.
I did try the reset CMOS step, my next step tonight will be disconnect everything...... oze

Posted By: ssyipa
Date Posted: 03 May 2018 at 8:12am

my solution was disconnected everything first including CPU and reset cmos again.