M2 NVMe not recognized on most cold boots
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=14356
Printed Date: 09 Aug 2025 at 8:01am Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: M2 NVMe not recognized on most cold boots
Posted By: DonYenko
Subject: M2 NVMe not recognized on most cold boots
Date Posted: 12 May 2020 at 3:45pm
Hi all,
since I purchased the M2 NVMe SSD last year, I am having issues with cold booting and sometimes even rebooting the system. Have in mind that this is not a Windows booting issue, this is "MBO refuses to recognize NVMe unless CMOS is cleared and settings reloaded"!
Here are the (important) specs:
- ASRock AB350 Pro4 (BIOS 6.30)
- AMD Ryzen 3600 (Cryorig H7 with uprated fan)
- Sapphire Nitro+ RX590 SE
- 2x Patriot Viper RGB 3000MHz 8GB PVR416G300C5KW (Micron H-die)
- ADATA ASX8200NP-240GT-C M2 NVMe SSD (installed in Ultra M2 slot)
- Seagate Barracuda Guardian 2TB 7200RPM ST2000DM008-2FR102
- Fortron Raider II 750W 80S
Behavior is as follows: In 9 out of 10 cases, booting stops at "ASRock" logo and it shows A0 code (IDE initialization). Rebooting the system does not help. Unplugging the system for a while does not help. Interestingly, clearing the CMOS does help and when the system finally boots into Windows, it works flawlessly (no drive errors, no subpar drive performance, no BSODs, no hickups)... until system is turned off (almost every time) or rebooted (sometimes).
I have already tried:
- Boot the PC with only 1 stick of RAM and without other drives
- Set CSM to disabled and enable UEFI only mode
- Disable Deep Sleep (and FastBoot) in BIOS
- Reseat the CPU, reseat the GPU, reseat the NVMe drive
- Check the power-connectors
At first, I thought it was a faulty NVMe drive, but it booted in other PCs every single time in any scenario. It is very simple - I do not want to reset the CMOS before or during every single startup of my PC. Any suggestions?
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Replies:
Posted By: Synapse
Date Posted: 12 May 2020 at 6:55pm
Try installing it into the lower M.2 slot. This way it'll be connected through the chipset's PCIe, maybe that'll make a difference.
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Posted By: DonYenko
Date Posted: 12 May 2020 at 8:06pm
Why would I put a NVMe drive, into lower M2 slot which is intended for SATA3-only M2 drives?
If that would work for some reason, that is a 4 times drop in achievable speeds!
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Posted By: Synapse
Date Posted: 12 May 2020 at 9:27pm
Oh sorry, I thought SATA-only M.2 are a thing of the past.
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Posted By: DonYenko
Date Posted: 13 May 2020 at 1:17am
Thinking exactly the same. Also, why are SATA3-only M2 ports not a thing of a past too.
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Posted By: Synapse
Date Posted: 13 May 2020 at 5:39am
Well, SATA ports work fine for HDDs, and those are still fine if you need bulk TB storage.
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