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. Best VPN providers 2020: Learn about ExpressVPN, NordVPN & more 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.