I was watching a video when suddenly my PC turned off and now there's a red CPU light blinking. I have a Ryzen 5 5600 on a B450m Mortar MSI motherboard. I've tried a bunch of things: resetting the CPU, switching RAM lanes, resetting the CMOS, and making sure both the 8-pin and 24-pin connectors are secure. Nothing seems to work, and that pesky CPU light is still on.
2 Answers
It sounds like you might have a defective part. The most likely culprit here is the power supply. If that's not the issue, it could be the motherboard. A faulty CPU is the least likely problem, but it's worth considering too if everything else checks out.
Have you updated your chipset drivers for Windows? It might help to clear out any old drivers from your motherboard too. Sometimes that can cause issues after upgrades.
I usually keep Windows updates off, and I haven't done that yet.
But my motherboard and CPU are brand new, got them just a month ago!