AMD Motherboards - B550 Phantom Gaming-ITX/Ax and Samsung 990Pro

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B550 Phantom Gaming-ITX/Ax and Samsung 990Pro

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=25942
Printed Date: 27 Jul 2025 at 8:45pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B550 Phantom Gaming-ITX/Ax and Samsung 990Pro

Posted By: MarkoH
Subject: B550 Phantom Gaming-ITX/Ax and Samsung 990Pro
Date Posted: 27 May 2023 at 10:50pm

Hello,
i tried to upgrade my SSDs and i don't know what i can do now...

I had a 960EVO in the back Slot (Gen3) and 4 Sata 860EVO... all was working fine.

NOW
I try to upgrade and bought a new 990Pro 1TB and 2TB.

In the back slot both work fine... but with Gen3 that's okay.
BUT if i add one in the Gen4 slot behind the cooler i get sensor errors in the Bios H/W Monitor and the fans are not workling correctly.

CPU shows under bios 6553.1C, Fans 65535 RPM and Volt are not okay.

I have the latest Bios on the ASRock and Samsung, CPU is a 5900X, GPU 7900XTX.

The 960EVO works fine in the Gen4 and sensor are okay, but i get the same errors if i add a 990Pro and under win11 i can't control the speed of my fans, no hardwaremonitor software can show me the fans.

I don't know what i can try... i tried to remove all the stuff, reset CMOS and so on...
Bye Marko

Replies:

Posted By: threadzipper1957
Date Posted: 23 Jun 2023 at 7:37pm

Best to use the support form https://tw.asrock.com/events/tsd.asp" rel="nofollow - https://tw.asrock.com/events/tsd.asp
Please check your spam folder for repleis

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Kind Regards