PCs are funny old beasts, and in the process of setting up my new Ryzen 7 2700X build I encountered a few ... hiccups. One of the more troublesome ones was the PC reporting that four of the eight cores were disabled, which I verified in several places and ran some benchmarks just to be sure.
I searched the web, trying anything and everything, including resetting the CMOS (aka the small onboard memory) on the motherboard by removing the battery and reflashing the BIOS. Nothing worked. But eventually I found a very simple thing did. All you need is AMD Ryzen Master.
I'll preface this by saying that this is by no means a guaranteed fix for your system. In my case, one very specific set of events triggers the cores to be disabled and this method has, so far, always brought them back.
Update: As folks have been asking in the comments, the set of events that triggered it in this example was applying XMP profiles and manual speed increases to the system's RAM in the BIOS. The issue is (in my case anyway) in no way linked to Windows 10 or the Ryzen Master application, which wasn't used for anything but the steps below.
If you don't have AMD Ryzen Master installed on your PC, you can grab it here.
How to enable disabled AMD Ryzen cores
Just follow these steps:
- Open Ryzen Master.
Locate and click the reset button in the top right corner.
Click OK when the dialog box pops up.
- Allow the PC to reboot and open up Ryzen Master again.
Assuming all went as planned, you should now see no disabled cores, as in the image above. Ryzen Master allows you to disable cores manually, and everything you do is at your own risk. But, thankfully, the big old reset button seems to do its job.
Ryzen Master is a piece of software that many will not use, and there's definitely a strong case to avoid it for purposes of overclocking, where you'll almost always be better off sticking to the BIOS. But, it definitely has a use, even if it's just to quickly set things straight if you're having a problem.
We may earn a commission for purchases using our links. Learn more.
Xbox Series X vs. Xbox Series S: Which next-gen console is for you?
How Microsoft’s more affordable next-generation Xbox Series S stacks up against its upcoming Xbox Series X flagship, including price, specs, features, and much more.
Razer Junglecat review: An essential tool for Xbox Game Streaming & XCloud
The Razer Junglecat is an Android gamepad designed to bring some Nintendo Switch-like usability to the awfulness of mobile gaming. And hey, it works pretty damn well.
Xbox Elite Controller Series 2 review: A gamepad (almost) perfected
Microsoft's original Xbox Elite Controller had lofty ambitions but collapsed under the weight of some crippling flaws. The Elite Series 2 fixes most of that while piling on extra features. Here's our review.
Buy one of these gaming PCs to play Microsoft Flight Simulator
Microsoft Flight Simulator 2020 is a demanding game and it needs quite the PC to run it comfortably. If you don't have a PC yet dedicated to gaming, you'll want to pick from one of these to really bring the cockpit to life.