BSOD ntoskrnl.exe only occurs when computer is left unattended

Quite a bizarre BSOD I am getting. When I leave my computer unattended for several and return to the computer, I find that it has rebooted itself with a Windows message stating a crash has occurred. I have not seen the BSOD as it automatically reboots itself.

The computer can be sitting there for several hours simply downloading a game via Origin or having a word document open and the crash will occur. On some occasions it will not happen, I can't find a pattern.

The crash has NEVER occurred while in use. I can be working or playing on the computer for 8 hours straight, never had a problem. Like I said, only occurs when it's left unattended for several hours.

I'm not entirely sure when this started I am afraid.

I update my Nvidia drivers which did not help.

I have uploaded the required logs and for your convenience some screenshots of my computer details/ BSOD message


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Please remove some files to increase the free space to at least 10-15%.
Every partition needs at least 10-15% free space so Windows can do its thing in the background.

   Warning

Less free space could cause BSOD's

Please visit Windows Update and install every update available, it may take a couple of times to get them all.


Please uninstall everything of Nvidia using Display Driver Uninstaller and install new drivers from Nvidia. Be sure the clean install box is checked and only install the Graphics driver and the PhysX driver, you can use this tutorial to do so NVIDIA Drivers - Avoid Problems
Attachment 393977

Code:

3: kd> lmvm nvlddmkm
Browse full module list
start             end                 module name
fffff880`0f60d000 fffff880`103c4000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
    Image name: nvlddmkm.sys
    Browse all global symbols  functions  data
    Timestamp:        Thu Nov 17 01:25:32 2016 (582CF8FC)
    CheckSum:         00D67D3A
    ImageSize:        00DB7000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4