PC Freezes randomly and i have no idea what it could be.

BotZing

Prominent
Jun 24, 2017
3
0
510
Let me get my specs out of the way first:

Motherboard: M5A99FX PRO R2.0
CPU: FX-9590 (didn't overclock personnally)
CPU Cooler: Custom AMD-Version of the Seidon 120mm
RAM: HyperX Fury 1366mhz (2x8gbs 1.5v)
GPU: GTX 780ti
PSU: 850w evga

Alright, so my problem is that a couple of months back, I experienced some freezing issue out of the blue whilst playing Overwatch. There was no high temperature on any parts, CPU around 50C and GPU around 60C or 70C. But lately, its been happening from 3-4 times a day. The temperature in my room is about 28C but the internal temp of my components are well within limits.

My PC froze while I was playing Overwatch and League, two not really intensive game. But it also froze whilst I was watching a twitch stream and Netflix. So the freeze isn't due to overheating since I had HWMonitor opened at the time giving me reads of around 60C for the CPU and 70C for the GPU depending on what i was doing. And when i say froze, i dont mean a Blue Screen. I mean literally freezing, the frame stays the same and I have no audio.

So two days ago I started to investigate. I began by running Prime95, after 3-4 mins, my Core #4 stopped working (which happened for all my further tests) and 30 sec later my PC froze. After that I was confident that my CPU was the cause, it was dying I assumed, but I continued my tests. I ran FurMark to test if my GPU was the reason for the freezing. After running it a couple of times, it came back negative. Thus my GPU was checked off the list. Third came my RAM. I had sticks of ram laying around (2x4gb), I installed them in and ran Prime95 again, still crashed.

Yesterday I decided to test my CPU but more precisely. I went into my BIOS and disabled core # 3-4 (since they come in pair). Then I ran Prime95, it crashed after 5 mins. Went into the BIOS again, enabled 3-4 and disabled 5-6. This time the test was stable, it didnt crash. Once again, went into BIOS, enabled 5-6 and disabled 7-8. The test was stable again. I went into my BIOS one last time and enabled back 7-8 and did a Prime95 test again, this time it crashed. I thought that was weird so I disabled 7-8 and tested it again; stable.

So that is where I am now. Prime95 and my pc are stable with 6/8 core enabled. If anything changes I'll update this thread at the bottom.
 
PSU: 850w evga
Which model is it? If it is not the good one you will need get the new PSU.

We know for the fx9590 ( or any other fx 9xxx), you will need a very good MB with the newer BIOS, cpu cooler, and PSU. Keep in mind the 120m cooler is not enough for the any fx 9xxx, you are better to use the 240mm cooler. If you can't find the problem, all you can do to disable the cores, or underclock the cpu to 4.5ghz or lower.
 

BotZing

Prominent
Jun 24, 2017
3
0
510
Thanks for your answer,

I had a CX Series™ CX750M — 750 Watt 80 PLUS® Bronze then changed for a EVGA SuperNOVA 850 B2, 80+ BRONZE 850W. As far as cooler goes, it was provided with the combo that AMD sold. The CPU came with that particular cooler and it did the job even through hot temperatures for 2 years now. And I came here to see if I'd get some other insight as to a possible cause for the problem but I'm content with disabling 2 cores for the sake of having a functioning PC if it comes to it.