Z390 PRO4 won't boot/post/go into bios
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=14740
Printed Date: 11 Mar 2025 at 7:19pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z390 PRO4 won't boot/post/go into bios
Posted By: ComGaunt
Subject: Z390 PRO4 won't boot/post/go into bios
Date Posted: 21 Jun 2020 at 10:21am
Hi all, I hope you are well.
I recently moved my I7-8700K and some ram to my new Z390 PRO4 motherboard and I am unable to boot/post. The new fan/heatsink on the I7 comes on and also the fan on my graphics card runs fine. Also, I managed to put in the power button correctly... so I press the button, fans work but nothing else does.
I started out with my M2 SSD in there and my GTX 1660 graphics card and ended up removing those and one of the sticks of ram hoping that would fix things.
I had read the forums, so I cleared the CMOS once hoping that would fix it but no luck.
Both CPU and the ram come from a DELL XPS 8930, would that break things?
Any suggestions would be appreciated.
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Replies:
Posted By: ASRock_TSD
Date Posted: 23 Jun 2020 at 4:19pm
Dear ComGaunt,
Thanks for posting your query to the ASRock forum.
For your question, kindly reinstall the CPU and install one RAM to different slots to see if it will work.
IF the problem persists, please try with a different RAM.
Also, FYR, please refer to the following link to check which of the BIOS version are required for the system to boot up with the CPU.
https://www.asrock.com/MB/Intel/Z390%20Pro4/index.asp#CPU
And don't worry, installing the RAM from DELL XPS 8930 will not break anything.
With thanks,
ASRock TSD
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Posted By: ComGaunt
Date Posted: 23 Jun 2020 at 8:19pm
Hi Asrock peeps,
I had forgotten about the CPU power supply which messed me up.
However, your Z390 board WAS bad.. Once I realized I had forgotten the CPU power, I did some more testing and found that an ASROCK 370 board I had also purchased was fine. The Z390 board was bad.
Anyway, I am sending the Z390 board back... and the Z370 board is in my nice big case running fine. When I boot sometimes the keyboard/mouse plugged in the back dont get power and the CPU lighting stays on, even when I turned the power off.
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Posted By: ASRock_TSD
Date Posted: 24 Jun 2020 at 11:38am
Dear ComGaunt,
Thanks for the reply and sorry to hear about the Z390 you received was faulty.
FYI
The USB light can be turned off via the BIOS deep sleep setting under the following path.
BIOS\Advanced\MB Configuration\Deep Sleep\Enabled in S4-S5
With thanks,
ASRock TSD
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