Constant reboots / resets after POST

monkeywrench wrote: As stated, ordered new cpu and gpu that arrived today. It was the cpu all along. What could've caused it? Overheating, poorly applied thermal paste? Or just a dud? I'm going to contact my vendor to see if I could get a replacement or something. Thanks for the assistance, everyone.

If going through AMD directly, they replace faulty CPUs without much of the fuss :) Depending on your retailer, it might be quicker going through retailer though :)

So, hello there, everyone. Status right now is: I have tried booting memtest - and it passed all green with both memory modules in.


Tried booting from USB with linuxstress to do some tests on the CPU - and it just resets as it is trying to boot.

Tried disabling the Core Performance Boost, no dice, just weird and slow behavior and actually hanging when booting anything.

So I wanted to order a cheap graphics card to test if it works and a cheap cpu - unfortunately the AMD Athlon 3000G is out of stock everywhere, so I had to order another Ryzen 7 - a 3800X, but it seems easier than to send away the computer for diagnostics elsewhere...

So, I'll be back in a few days, swearing. Or cheering.

Thanks for all the ideas and support, everyone.

Take it, BIOS is the latest?
Have you tried booting and doing something with single stick of ram placed in second from the left RAM slot? Maybe try booting into Memtest86+ USB stick and see if you can run your RAM through memory test?

PSU failures (not catastrophic ones) manifest themselves under certain loads. If GPU is too powerful for PSU (not your case, just an example), PC will start, get into Windows, and will crash if you start doing anything 3D intensive.

In your case, GPU will never be able to kill your PSU, however faulty PSUs happen, and in those instances failures can manifest in various ways. When you start installing windows, or start booting windows, CPU is loaded quite a bit, so that might trigger a reboot. In BIOS if you could report voltage sensor data, it might reveal PSU issues (or not) ;)

It is possible that PSU gave out.
CPUs do not die that easily these days. You would have felt overheating CPU in your gameplay before it would switch itself off.
In BIOS go to Monitoring tab, and check what each voltage sensor is reporting (12V, 3.3V, etc).