HELP! crashes / black screen after couple of minutes playing games

[adhiya2a]

Hello all, I have this PC which i built around 3 years ago:

Mobo: Asus Maximus V Gene
CPU: intel i5-3470k (oc to 4.4ghz) with noctua u12s cooler
GPU: Gigabyte 780ti windforce OC (not the ghz one)
RAM: corsair vengeance pro 8gb(4gbx2) 2133
PSU: Enermax revolution87+ gold 650w
Windows 10

I use that PC for heavy gaming (4-10 hours) almost everyday.

Recently, whenever i start a game after a minute or so the screen freezes with distorted sound (game sound from the speaker) for about a sec then goes black screen but my pc is still running (light still on). After that, for about 5-10 seconds my pc will restart itself (no BSOD), sometimes i have to hard shutdown it. There is no anything weird happening to the PC while this happens (no weird sound, no fan blasting full speed, no strage psu sound) everything looks normal.
For example: in overwatch at the menu screen (with 3d rendered character) nothing happened. As soon as i got a game and playing for about 1 minutes the freeze/crash then blackscreen happens. theres no artifacts, dropping frames or anything before this happens.

I figure after these 3 years of gaming either the PSU or GPU is failing. I have similar crash around 2 month ago but after i updated and clean install nvidia drivers everything is fine so i ignore it.

But now i cant do anything with my pc besides using office, browsing, or watching youtube. Anything besides gaming is fine no problem whatsoever.

I tried to run furmark and it crashed almost instantly (same situation, black screen, then restart after 5-10 secs).
Other test i've done:
memtestg80 - all pass (no errors)
EVGA OC Scanner - Plasma 1080/4aa preset 1 hour no problem whatsoever (max gpu temp 76c)
EVGA OC Scanner - Furry E (gpu burner) crash after 2-5 seconds running (same black screen restart situation)

Temp is not a problem because i keep the CPU under 70c and GPU never exceed 76c

The problem is i don't have any other psu or graphics card and i don't have a friend with a PC either so i cant test whether my PSU or GPU is failing.

So is my PSU (my guess) is faulty or my GPU?

I will appreciate any help. Sorry for my bad english. Thanks!

 

[adhiya2a]

Here's the detailed reports from event viewer:
- <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>5</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000400000000002</Keywords>
<TimeCreated SystemTime="2017-10-09T09:46:41.797355100Z" />
<EventRecordID>21953</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>Fortress</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">6</Data>
<Data Name="PowerButtonTimestamp">0</Data>
<Data Name="BootAppStatus">3221225684</Data>
<Data Name="Checkpoint">0</Data>
<Data Name="ConnectedStandbyInProgress">false</Data>
<Data Name="SystemSleepTransitionsToOn">1</Data>
<Data Name="CsEntryScenarioInstanceId">0</Data>
<Data Name="BugcheckInfoFromEFI">true</Data>
</EventData>
</Event>

 

[adhiya2a]

any thoughts?

 

[adhiya2a]

bump