I played Shadow of Mordor on optimal settings, the temperatures were good.
After I was done playing, the temperatures got back to normal in seconds of course, yet 5 minutes later my computer just unexpectedly shutted down.

It happened twice today with Shadow of Mordor, and it happened occasionally in the past as-well.
When this happens my computer automatically restarts, but it usually shuts-down unexpectedly again right away. (I try to shut it down before and give it a minute before the restart, just in case it does have to do with temperature, and that got it started up successfully so far even though I don't think temperatures are the issue).

How can I troubleshoot and fix my problem?
I don't know much about hardware, but I have a hunch that this is a PSU issue. Is that likely?
It seems somewhat strange that it only happens after gaming. I can play for hours, but only afterwards it will find a reason to shut-down.

I'm running AMD Radeon R9 290X, with Intel Core i7-4790K, drivers are up to date.

The system logged a critical message saying from the kernel-power saying "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."

  • standard issue, standard answer - overheat or underpower. If it's not overheating, then first thing to look at is the PSU. They do get 'tired' over time. – Tetsujin Nov 30 '14 at 18:20
  • @Tetsujin It's relatively new, so I suppose underpower (I did add an extra hard-drive, but since day 1 so I can't tell any difference). I'll try to look into it, thank you. – MasterMastic Nov 30 '14 at 18:35
  • @MasterMastic 1. It sounds to me like BSOD. Have you looked at the event log? 2. I didn't understand a few things, did the computer completely shutdown or rebooted? 3. Did this ever happened during a game or only afterwards? – EliadTech Nov 30 '14 at 20:31
  • @EliadTech 1. It does? there was no actual BSOD. I have now looked at the log and added the message to my question. 2. It rebooted. 3. Possibly. Sometimes it misbehaved like that during games and I assumed temperature (although now that I think about it, I don't think it reached really really high ones). Thank you for your response! – MasterMastic Dec 1 '14 at 6:14
  • Try replacing components with a known good spare. Also try using a benchmark utility to rule out that specific game as the culprit. – spuder Dec 1 '14 at 6:26

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