I just built a new PC at Christmas and every now and again the PC is shutting down unexpectedly. It seems to happen randomly when the PC is idling. It doesn't happen every time its idling(maybe once every other day, seems to be completely random) and may not happen for days. Here are the PC specs:
Asus Maximus VII Hero (latest BIOS, problem happened on older BIOS also)
Intel i7 4790k (no OC)
16GB Corsair Vengeance 1866 (only running at 1333)
be quiet! Dark Rock 3
EVGA GTX 660 ti (had this in my old system with no issues, latest drivers)
Antec 520W (had this in my old system for over 2 years with no issues)
Samsung 840 EVO 250GB (Boot drive, Windows 8.1)
Seagate Barracuda 2TB (used for my doc, video, pics ,etc..)
Fractal Design Define R4
It has only shutdown once while i was using the PC and i was only watching a movie so it was practically idling.
Here is a list of things i have discovered though troubleshooting that might help narrow down the problem:
-I have been able to play demanding games without issues
-i have ran memtest for over 8 hours with no errors
-i have stress tested the entire system with no issues
-while stress testing CPU temp never goes over 70.
- I had AIDA64 installed and came across this thread I have uninstalled AIDA64 but the problem still exists
-I let the system sit in the BIOS while
I wasn't using it for many days to see if it would still shutdown and it did not (could have been luck I dont know)
In my opinion based on what I've seen, it's a software/driver issue or at least I hope it is
. If all else fails and we are unable to find the problem I think my next step is to reinstall windows.
Thanks for the help
Asus Maximus VII Hero (latest BIOS, problem happened on older BIOS also)
Intel i7 4790k (no OC)
16GB Corsair Vengeance 1866 (only running at 1333)
be quiet! Dark Rock 3
EVGA GTX 660 ti (had this in my old system with no issues, latest drivers)
Antec 520W (had this in my old system for over 2 years with no issues)
Samsung 840 EVO 250GB (Boot drive, Windows 8.1)
Seagate Barracuda 2TB (used for my doc, video, pics ,etc..)
Fractal Design Define R4
It has only shutdown once while i was using the PC and i was only watching a movie so it was practically idling.
Here is a list of things i have discovered though troubleshooting that might help narrow down the problem:
-I have been able to play demanding games without issues
-i have ran memtest for over 8 hours with no errors
-i have stress tested the entire system with no issues
-while stress testing CPU temp never goes over 70.
- I had AIDA64 installed and came across this thread I have uninstalled AIDA64 but the problem still exists
-I let the system sit in the BIOS while
I wasn't using it for many days to see if it would still shutdown and it did not (could have been luck I dont know)
In my opinion based on what I've seen, it's a software/driver issue or at least I hope it is

Thanks for the help