Question Disabling C-States fixed the freezing issue ?

[kalm1234]

Hello everyone,

Had a bit of an odd experience recently. Well, its honesty a whole year coming.

So a year ago, my system ended up randomly freezing out of nowhere. No matter what OS I was running, Windows 11 (even tried a new install and it froze mid-install), or Linux it would freeze out of nowhere. But I noticed it only happened when it was idling. Tested my CPU, RAM, hard drives, nothing. Ran a blend of OCCT tests, nothing.

Since it was when things were idling, I googled some things that happen when a system is idling, and found C-States. Disabling it stopped the freezes.

Now, a year later I updated my BIOS and it reset my settings. I decided to try it with the default settings (C-States back on). Computer didn't even make it past the motherboard logo when it was loading the OS. Wouldn't boot into Linux, Windows, or even the Windows Recovery partition.

Of course, disabled C-States and everything returned to normal, no more freezes.

Can someone who understands this more tell me if I just have a bad CPU? Or maybe I've misconfigured something?

I'm running the following:
Motherboard: MSI MEG X570 Godlike
CPU: AMD Ryzen 9 5900X

Thank you.

 

[Tolis_GR]

It could be an inefficient low voltage power delivery that you are bypassing by asking constant current flow with c states disabled. Could be simply a bad psu, or your motherboard's mosfets or VRMs. Hard to tell. Which is your psu?

 

[kalm1234]

It is an EVGA SuperNOVA 850 G2, 80+ GOLD 850W.

Bought it new. Granted, its pretty old, but still in warrenty.

 

[Tolis_GR]

Depends how old but they are quite robust. Maybe when it;s time to reapply some thermal paste you check the socket and cpu mounting with the cooler since all the power delivery is driven from those mobo pins. A small dirt, bent pin etc could mess things up

 

[ak47jar3d]

Hmm. I think something is defective but which part will be very hard to test for. If I have to guess is motherboard problem but that's just a guess.