Stress test issue

[Psittac]

For some reason if I let my system run aida64 over night or during the day, when I come home my computer is at the login screen as if it had rebooted.  I have turn off monitor to never screen saver sleep etc set to always stay on.

 

My system is set to default and it did it today.  What's the deal?  I've had it run for 9.5 hours before but sometimes less.  Any thought's?

 

Asus x99 sabertooth

5820k

16-32g corsair lpx 2400

Asus 1070FE

Samsung 250g 950pro

Samsung 2x 240g 850 evo

Antec 750w edge

 

custom hard lined loop, cpu and gpu with plenty of radiator space.

[Enderman]

Check event viewer and find out?

[NeoFrux]

Event Viewer aside (updates maybe?), what are your temperatures like?

[Psittac]

Oh yeah, never been much for using event viewer.  I'll check it out

 

Temps are 40-50 load

[Psittac]

Nothing of use in event viewer, just say's that it shut down unclean at 4:50 and rebooted from an unclean shut down.  Nothing critical or warning between start of stress test and reboot.

[Psittac]

does aida64 log?

 

edit: yeah max temp was 57 through the whole run