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Need help Diagnosing PC Crashing

post #1 of 6
Thread Starter 
My computer started crashing while playing games on July 16th. I can't figure out what is actually the problem, because of the way its crashing. The computer has been built for almost a year without problems, just up until this week. I Will itemize the symptoms below.

General Symptoms:
  • nothing was overheating, I use Rainmeter to monitor my temps and fans on my second monitor, while my game is on the primary screen.
  • distorted Sound persisted until forced shutdown
  • loss of video



First Crash:
  • running Diablo 3 on 1 monitor (windowed mode) , with steam sales above it, and Chrome on second monitor.
  • Both screens lost signal, then after about 10 seconds the main screen had a 3 inch tall bar in the center of it, the width of the whole screen that looked like red and black waves interlaced (think ps3 home screen like)
  • Sound was a mix between autotune and feedback, but intermittently went completely normal. then reverted to the distortion
  • non responsive, forced to hard shutdown.

Attempt to replicate after reboot:
  • Replicated the conditions
  • same result

Crash3:
  • Ran Starcraft2 and game crashed only after playing a match for a few minutes.
  • No sound problems, just crash.
Proceeded to clean fans in system
Crash4:
  • Attmpted Sc2 again, this time it lasted about 3x as long before the crash.
  • It only froze, there was still an image on the screens, albeit an unresponsive, frozen one.
  • no sound issue
Crash5:
  • Ran Windows MemTest and Asus MemOK on before booting into Win7; Both said Ram was fine in that sense.
  • To eliminate GPU possibility, I ran Prim95 to test the cpu and RAM.
  • Ran for 10 minutes at full load. Had to leave house for a about 20 minutes, was crashed by the time I got back.
  • no sound or video
Crashes 6+7
  • Just to be absolutely sure it wasnt either gpu, I tested them out individually, removing the Xfire cable and using one at a time for the monitors
  • This delayed the crash for about 25 minutes on both cards.
  • The game would 'skip' as if it were dropping frames, and the sound would become distorted before it crashed.
  • It would save itself several times before actually crashing though. (this is different than any of the other crashes, it is the only times it has "almost" prevented it)

And now I am here with the tests, asking for your help because of this obscure problem. The computer Idles fine, I even had Steam open finishing downloading my purchases overnight without a problem. The problem occurs when having a game open, and only just recently started.

Thanks! (sorry for long post, but I figured the more details you have on what happened the better)
post #2 of 6
Seeing as you are crashing under load on each individual card my best guess is that your PSU is on its way south.

Try a third video card and see if you get the same results.
post #3 of 6
I had a problem very similar for about 3 months.

Drove me nuts.

For a whole month when ever I would play games the screen would freeze and a horrible static sound would come over my speakers. Sometimes the screen would just go black and reboot. This would also happen streaming youtube however that occurrence was more rare.

After a month of this the problem started to reveal itself. About 1 in 4 times the below bluescreen message would appear:



I could go into a ton of detail but long story short this is what happened.

The BSOD above represented a memory error.

Just before this issue occurred I moved some stuff around in my case and hit the CPU heatsink with the back of my hand but thought nothing of it.

Apparently I hit it too hard because it wedged the CPU in the socket. I tried to reseat the heatsink and I could not get the arm bar to release. I had to gently work with it for 2 minutes. After I got the CPU out I put it back in, reapplied the thermal paste and I have been good since May.

Analysis: The heatsink was applying too much pressure to the CPU and was pushing down on the memory controller of my Phenom II. As a result memory errors were occurring.

After reinstalling the CPU everything has worked problem free.

If this does not work let me know. I can provide a lot of advice as I researched, researched, and tried a ton of stuff. As I stated earlier this issue was extremely frustrating. I only had a 3 year old motherboard and new that it was too young to be going bad.
post #4 of 6
Thread Starter 
I didn't have a third video card to try. But I went with the assumption that it was in fact the PSU that was the problem. This was confirmed by all of a sudden my fans sounded like they quadrupled in speed the last crash of using that psu.

The fans had a huge increase in speed, the screen went black, and the noise persisted. The case fans are powered directly from the psu with molex connectors (the 4pin peripheral), so the psu going was the obvious answer.

Installed an EVGA NEX750B and its running perfectly again biggrin.gif
post #5 of 6
Hopefully you dont have other issues with hardware then, cause it sounds like lots of extra voltage went down the 12v rail. Glad to hear you are up and running again though:D
Gaming
(17 items)
 
Gaming PC
(20 items)
 
 
CPUMotherboardGraphicsRAM
6700K AS Rock Z170 Extreme7+ Titan X Pascal G.Skill DDR4-3200 
Hard DriveHard DriveHard DriveCooling
Intel 730 series Intel 730 series Samsung 840 EVO Custom water cooling 
OSMonitorKeyboardPower
Win 10 Pro x64 AMH A399U E-Element mechanical, black switches, Vortex b... EVGA SuperNOVA 750w 
CaseMouseAudioAudio
Lian-Li PC-V1000L Redragon M901 LH Labs Pulse X Infinity DAC Custom built balanced tube amp with SS diamond ... 
Audio
Fostex TH-X00 headphones with custom mods 
  hide details  
Reply
Gaming
(17 items)
 
Gaming PC
(20 items)
 
 
CPUMotherboardGraphicsRAM
6700K AS Rock Z170 Extreme7+ Titan X Pascal G.Skill DDR4-3200 
Hard DriveHard DriveHard DriveCooling
Intel 730 series Intel 730 series Samsung 840 EVO Custom water cooling 
OSMonitorKeyboardPower
Win 10 Pro x64 AMH A399U E-Element mechanical, black switches, Vortex b... EVGA SuperNOVA 750w 
CaseMouseAudioAudio
Lian-Li PC-V1000L Redragon M901 LH Labs Pulse X Infinity DAC Custom built balanced tube amp with SS diamond ... 
Audio
Fostex TH-X00 headphones with custom mods 
  hide details  
Reply
post #6 of 6
Thread Starter 
Having everything running off of that PSU was pushing it close to its rated power I believe. And with the PSU having only one 12v rail, I could see why it would fail. It lasted over a year and a half, and it was cheap. I intended on upgrading at some point, it only pushed the issue smile.gif

Still running perfectly fine with the new PSU, so no complaints here biggrin.gif
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