Random and recurring computer crashes

bodis87

Prominent
Jan 6, 2018
1
0
510
Hi there citizens of Tom's! As a last ditch effort I'm turning to you with a problem I've been plagued by for more than a year. Before making this topic I made sure to browse this awsome site for any similar threads, unfortunately I found no solution.
I bough my computer from a serious dealer, they installed the parts I chose. The computer is some two years old.

My issue:
Since about a year ago I started to experiance crashes while gaming. As I recall I first noticed them while playing Blizzard's Overwatch. I cannot remeber doing anything with the computer before the crashes started. The symptomes is as follows, when gaming for an extended period of time suddently the computer freezes and a high and annoying sound loop is played. A hard reboot is required. The crashes usually startes after 1-3 hours of gaming but when they start they happens all the time, almost as soon as I start up a game after a crash I can play for like 5 to 15 minutes before the next crash.

The crashes has come and gone for the better part of a year. Usually when a "crash period" starts I stop gaming for a week or two. They return at random after that, sometimes I've been able to play for a month, sometimes weeks and sometimes as soon as I begin playing again. I have not been able to discern any pattern to why the crashes starts, goes away or comes back. I've had a hard time to force the crashes for troubleshooting as they happens very randomly.

The crashes ONLY happens when gaming. I just had a prelonged "crash free" period, it started again while i played Blizzard's Heroes of the Storm. It's really mostly Overwatch and HOTS that are causing crashes, but they have happed from other games aswell.

I put the computer back to the dealer as a warranty claim, they did extensive troubleshooting for two weeks and finally managed to get the crashes going. They couldn't find any "smoking gun" so to speak. They did exchange my old GTX 980Ti for a new GTX 1070 as they found some coil whine from the old GPU. They really wanted to help me obviously.

My own troubleshooting:
- Reinstalled Windows several times.
- Reinstalled (clean installs) drivers for GPU/BIOS/chipset/audio.
- Used costume fan curves etc.
- Disabled all sound drives, both software and in BIOS, and am currently running audio from bluetooth.
- Unplugged the 3,5mm audio jack in the chassie from the motherboard.
- The dealer exchanged GPU cards as stated above.
- I've never clocked anything, all is stock.
- Run memtest for extensive periods of time.

I've previously ran 3d Furmarks without issue, but I just had a breakthrough when running furmarks today. I managed to crash the computer which have only happened while gaming perviously. I had HWmonitor and MSI Afterburner running while doing the benchmark. I took a cell phone photo from the values as the computer froze. Link is: https://imgur.com/a/uoul4

After trying to hard reboot from the crashes today the computer keeps shutting down immediately, for like 10-30 seconds. This has happened before when the computer crashed from gaming.
The computer crashed today while doing Furmark both with a costume fan curve on and off. The last picture in my imgur link has no fan curve. The temperature is almost the same as with fancurve on.

Computer specs:

Intel Core i7 4790K 4GHz, 8MB
Cooler Master Hyper 212 EVO
EVGA Supernova G2 750W, 80+ Gold, Modulär
ASUS Z97-A ATX
HyperX Fury 16GB (2x8GB) CL10 1600MHz Svart
Samsung SSD EVO 850-Series 250GB
1TB WD Blue 7200rpm 64MB
EVGA Geforce GTX 1070

DXDiag file: https://pastebin.com/9XJbSc0E

I'm really at loss to what else to try. I appriciate that You are taking Your free time reading this. Thanks in advance. Please let me know if there's anything You need to be able to help me.