My Dell OptiPlex 790 PC is having occasional random restarts. Maybe once a week on average, so not too often but it’s definitely happening.
It is left on most of the time. Sometimes the restarts have happened overnight, as in I come to it in the morning and it’s either turned off, or at the login screen, having restarted.
It’s also happened when I’m using the PC not particular doing anything special.
I’ve checked the Event logs in detail, and there seems to be nothing. Just after the restart an log entry saying
“The previous system shutdown at 20:09:20 on 26/08/2014 was unexpected.”
I therefore consider could something be overheating and since the last restart I’ve left CPUID HWMonitor running and have included a screen shot of this at present (it has been running for about a week without a restart, HOWEVER I have hibernated the PC a few times since this was running)
Are these acceptable ranges?
Note I have also run the Dell diagnostic which all passed including fan tests.