crashing Is my PSU causing my PC to black screen and crash?

[lewis wruk]

This is what windows tell me - The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

 

This only happens when playing high demanding games like ARK, Rust or Planet coaster, whenever i play Rocket League, Dota 2, Rainbow six siege or any well optimized game i will not crash EVER!

 

Is this my PSU Failing?

 

Specs:

CPU - FX 8350

MOBO - MSI 970A Krait

GPU - XFX R9 390X DD

Cooler - Hyper 212 EVO

RAM - HyperX Fury 1600 MHZ DDR3 2x4GB

[lewis wruk]

Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          18/01/2017 07:45:12
Event ID:      41
Task Category: (63)
Level:         Critical
Keywords:      (70368744177664),(2)
User:          SYSTEM
Computer:      SKY
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
    <EventID>41</EventID>
    <Version>4</Version>
    <Level>1</Level>
    <Task>63</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000400000000002</Keywords>
    <TimeCreated SystemTime="2017-01-18T07:45:12.515109600Z" />
    <EventRecordID>22852</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="8" />
    <Channel>System</Channel>
    <Computer>Sky</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BugcheckCode">0</Data>
    <Data Name="BugcheckParameter1">0x0</Data>
    <Data Name="BugcheckParameter2">0x0</Data>
    <Data Name="BugcheckParameter3">0x0</Data>
    <Data Name="BugcheckParameter4">0x0</Data>
    <Data Name="SleepInProgress">0</Data>
    <Data Name="PowerButtonTimestamp">0</Data>
    <Data Name="BootAppStatus">0</Data>
    <Data Name="Checkpoint">0</Data>
    <Data Name="ConnectedStandbyInProgress">false</Data>
    <Data Name="SystemSleepTransitionsToOn">0</Data>
    <Data Name="CsEntryScenarioInstanceId">0</Data>
  </EventData>
</Event>

[Megah3rtz]

Well, tell us the PSU model then. 

[lewis wruk]

57 minutes ago, Megah3rtz said:

Well, tell us the PSU model then. 

Oh sorry its EVGA NEX750B bronze 80+

 

 

However, i just ubderclocked my GPU as it was louder than usual and hotter too, no black screen, think i found my problem, thanks for the response though.