How to fix disabled AMD Ryzen processor cores

If your Ryzen processor is suddenly reporting disabled cores, there's an easy fix.

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.

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