Unexpected Shutdow every day

I always try to leave my computer on all the time, but from the last 3 days the computer has been off when I get home.

Since I'm not home I'm not sure what really happens, I just check the logs and I found the following information.

(dump files attached, updated today)

Thank you in advance for your help

The zip contains dumps from 10/25, 11/4, 11/14 and 12/14.

I looked at the last one, it shows a problem with SYMNETS.SYS.

Code:

ffffad00`695227b8  fffff80f`f9b086b3*** WARNING: Unable to verify timestamp for SYMNETS.SYS
*** ERROR: Module load completed but symbols could not be loaded for SYMNETS.SYS
 SYMNETS+0x186b3

That belongs to Symantec Network Security.

I don't see any indication in the event log as to whaty caused the shutdown. I can see when (maybe) it happened:

Code:

Event[3213]:
  Log Name: System
  Source: Microsoft-Windows-DHCPv6-Client
  Date: 2016-09-13T19:27:36.029
  Event ID: 51046
  Task: Service State Event
  Level: Information
  Opcode: ServiceStart
  Keyword: N/A
  User: S-1-5-19
  User Name: NT AUTHORITY\LOCAL SERVICE
  Computer: DESKTOP-JL2VNHC
  Description: 
DHCPv6 client service is started

LOOKS LIKE IT HAPPENED HERE.

Event[3214]:
  Log Name: System
  Source: Microsoft-Windows-WLAN-AutoConfig
  Date: 2016-09-13T19:27:36.652
  Event ID: 4000
  Task: N/A
  Level: Information
  Opcode: Start
  Keyword: N/A
  User: S-1-5-18
  User Name: NT AUTHORITY\SYSTEM
  Computer: DESKTOP-JL2VNHC
  Description: 
WLAN AutoConfig service has successfully started.