Boot Issue When XMP Enabled
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=18402
Printed Date: 09 Aug 2025 at 4:04am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Boot Issue When XMP Enabled
Posted By: cheesecake
Subject: Boot Issue When XMP Enabled
Date Posted: 18 Mar 2021 at 1:28am
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I have a Razer B550 paired with 2x16gb Trident Z Royal 3600 ram. It was working fine for a few weeks but suddenly I had issues where the pc was non responsive every morning. I tried a fresh Windows reinstall and now when I try to set the ram to 3600 xmp, the pc will not boot and shows the code "C0" It seems like the pc will only run when the ram is set to auto. |
Replies:
Posted By: Xaltar
Date Posted: 18 Mar 2021 at 3:11am
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It sounds like your CPU IMC degraded and now can't handle 3600 at the RAM's XMP settings. XMP = eXtreme Memory Profile, basically a built in overclock saved in the RAM's firmware that works on most systems. You can try manual settings, take a look for a good Ryzen RAM overclocking tutorial using Ryzen Calculator (a free app). If that doesn't get you up and running, you should contact your retailer and try to RMA the CPU. The likelihood anything else is causing the issue is slim. If the system began working with XMP then stopped its either the RAM or the CPU that has degraded. I would lean toward CPU but you can partially rule out RAM by installing a single RAM module in slot A2 and try enabling XMP. If it works, try the other module in the same slot and repeat. If only one fails, return the RAM, if both do, return the CPU. ------------- 
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Posted By: Xaltar
Date Posted: 18 Mar 2021 at 3:13am
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If both RAM modules pass, try them again in dual channel (A2 and B2 slots) and see if that works. If not, RMA the CPU. -------------
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Posted By: cheesecake
Date Posted: 19 Mar 2021 at 7:01am
| I tried each ram individually and neither would boot running xmp. I then tried them on my brothers pc running the same cpu and motherboard and it worked on his. I tried him ram on my pc and it would not work running xmp. I think this is the cpu. |