Computer shutting down unexpectedly (after upgrade)

Win 7 Desktop upgraded to Win 10 on 25-July. All was well until 9-Aug and 10-Aug when computer has shut down unexpectedly. In Reliability Monitor it shows (Windows) Photos stopped working on both days. Then after the crash the monitor shows Windows was not properly shut down, stopped working and shut down unexpectedly. Related? No changes have been made other than installing a few programs (CCleaner, Speccy) immediately after the upgrade. I did not have this issue when it was on Win 7.

edit: This has happened two more times since I originally posted. Computer was going to sleep but instead of power button being amber, it was unlit. Pressing it restarted the computer and again I saw that Windows was not properly shutdown, stopped working and shut down unexpectedly. I will attach a second dm log file. Also I have updated System Specs to reflect this desktop computer.

Hi bru,

Please check HP for driver updates for the Realtek LAN driver.
Your Realtek LAN driver seems to be having issues with changing the power state for sleep.

Code:

0: kd> !irp ffffe00152c8ee10
Irp is active with 3 stacks 2 is current (= 0xffffe00152c8ef28)
 No Mdl: No System Buffer: Thread 00000000:  Irp stack trace.  
     cmd  flg cl Device   File     Completion-Context
 [N/A(0), N/A(0)]
            0  0 00000000 00000000 00000000-00000000    

			Args: 00000000 00000000 00000000 00000000
>[IRP_MJ_POWER(16), IRP_MN_SET_POWER(2)]
            0 e1 ffffe0015025c050 00000000 fffff8029ada0b34-ffffe0015017e820 Success Error Cancel pending
	      Unable to load image rt640x64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for rt640x64.sys
*** ERROR: Module load completed but symbols could not be loaded for rt640x64.sys
 \Driver\rt640x64	nt!PopSystemIrpCompletion
			Args: 00015400 00000000 00000005 00000003
 [N/A(0), N/A(0)]
            0  0 00000000 00000000 00000000-ffffe0015017e820    

			Args: 00000000 00000000 00000000 00000000

0: kd> lmvm rt640x64
Browse full module list
start             end                 module name
fffff801`bc200000 fffff801`bc294000   rt640x64 T (no symbols)           
    Loaded symbol image file: rt640x64.sys
    Image path: rt640x64.sys
    Image name: rt640x64.sys
    Browse all global symbols  functions  data
    Timestamp:        Wed Oct 07 17:03:55 2015 (5615345B)
    CheckSum:         0009543E
    ImageSize:        00094000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

If you are using a program like Ccleaner please stop using it while troubleshooting.
This because programs like Ccleaner remove dump files that are needed to troubleshoot.
Or configure Ccleaner to not remove dump files:

I do not think it is related, because connection and sleep are different things.

How did you check for updates?

Device manager rarely does say there is an update, I wouldn't recommend to check via device manager.
Either HP, Windows Update or Realtek should be checked for driver updates.

There won't be an update for the driver available, maybe once in a long while a new driver update is being pushed by Microsoft through Windows Update but as you have already a driver from Windows Update there won't be one available anytime soon.

Such questions are better asked to Microsoft, I would assume that the difference with systems (i.e., different Realtek connection) has something to do with it but more I can't say.