Computer keeps rebooting from Critical error - Kernel-Power Event ID 41

[snowylop]

Hi all, my computer keeps rebooting from Critical error - Kernel-Power Event ID 41.

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 2/6/2016 3:02:37 PM
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (70368744177664),(2)
User: SYSTEM
Computer: DESKTOP-N8RDKR9
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:
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<EventID>41</EventID>
<Version>3</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000400000000002</Keywords>
<TimeCreated SystemTime="2016-02-06T07:02:37.120273000Z" />
<EventRecordID>1670</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
</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>
</EventData>
</Event>

I have tried the following:
Reformat to Windows 10
Switch to a different RAM
Add another fan (total 3 fans now)
Update BIOS
Change CMOS battery

Here are my PC details:
Intel i5-4460
ASRock H81M-HDS
G Skill NT PCI2800/1600MHZ 2x4GB DDR3
Crucial MX100 256GB SATA3 SSD
Toshiba 1TB 7200RPM SATA3 HDD
Seasonic S12G 650W GOLD 80+ PSU
POWERCOLOR T.D R9 280X 3GB DDR5 PCI-E

Please help. Thanks in advance!

 

[jtjt00]

Try reseat the PSU 24/12 pins connectors. If fail, get a spare PSU to test.

 

[snowylop]

Try reseat the PSU 24/12 pins connectors. If fail, get a spare PSU to test.

ok. i have a spare psu but its only 550w. can i use that? thanks