BSOD playing video games such as Cs:Go etc. Error, Random BSOD's

How much fragmentation is there on your hard drive?

Quite odd, SeaTools doesn't slow down a pc.
Would you mind running HDTune for the health and error scan? Just to make sure it is NOT the hard drive causing this.

A 0x3B(SYSTEM_SERVICE_EXCEPTION) and a 0x17E(SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M) where the 0x17E is pointing to the graphics drivers.

Please remove the scheduled tasks of Norton, they cause problems

Code:

Event[6440]:  Log Name: System
  Source: Microsoft-Windows-TaskScheduler
  Date: 2015-11-01T16:48:16.076
  Event ID: 414
  Task: Task Misconfiguration
  Level: Warning
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT AUTHORITY\SYSTEM
  Computer: DESKTOP-KBQ12OH
  Description: 
Task Scheduler service found a misconfiguration in the NT TASK\Norton Internet Security\Norton Autofix definition. Additional Data: Error Value: C:\Program Files (x86)\Norton Internet Security\Engine\22.5.4.24\SymErr.exe.

Diagnostics Test

 Clean boot

Please try the following:

• Open taskmanager
  
  • Go to the tab startup
  • disable everything
• Search msconfig and open it
  
  • Go to the tab services
  • Check 'hide microsoft services'
  • Uncheck all other services
  • Click apply and click ok
• Reboot if asked

See if the problem persist, if the problem does not persist enable in the startup tab in taskmanager 1 item and in the services tab in msconfig also 1 service, reboot and see if the problem persist. Keep doing this until you find the culprit or there is nothing left.
If the problem still persist, try booting in safe mode and see if the problem still persist

You need to be in the scheduled tasks, the tasks from Norton haven't been removed even though Norton is removed.
Search "scheduler" (without quotes) and press enter, that should open the task scheduler.
From there you can find it.