graphic card issue

[HPTL7]

Hi
I get to play gta v few hours and then my computer shuts off without any warning.
The graphic card seems hot, when i check the temps under no load it is around 40-43 celcius and the fans are spinning at around 1400rpm. Is this normal?

Specs
msi z97 gaming 3
intel i3 4330 stock
16gb hyperx fury
corsair 650m psu

 

[HPTL7]

actually, after some research in might be my psu?
The fans do not spin, It is not meant to until 40% load or something.
Apparently 650 and 750's have been effected and I have a 750

 

[zeegy]

is there anything in your event log to suggest the reason for the crash / reboot before uou suspect hardware / heat related issues? if not then power or heat is probably to blame, heat would tend to underclock rather than reboot, power on the other hand would reboot.

open hardware monitor allows you to log temps to a csv file... you could track these after a crash?