Computer freezes under heavy gpu load

[Asgersss]

Hi first post in here, long time reader though.

My computer freezes whenever the gpu is under heavy load. No restart or black screen just a frozen image. It happens during games, GPU stress tests and a few times when browsing. I can force it to freeze by running the GPU-Z stress test, runs for 10 sek to a few mins before freezing.

My setup

• 
  ■Mobo: Gigabyte GA-Z97M-D3H - Rev. 1.0
  ■GPU: Sapphire radeon R9 280X Dual-X OC
  ■CPU: Core i5 I5-4690K 6 MB
  ■Heatsink: Cooler Master Hyper 212 Evo
  ■RAM: G.Skill TridentX Series 4 x 4 GB (2400 MHz 10-12-12-31)
  ■PSU: Corsair HX850i
  ■SSD: Samsung 840 EVO
  ■Case: BitFenix Phenom
  ■OS: Windows 8.1 64 bit

The RAM is running a XMP profile. GPU and CPU is running at their default settings, no over or underclocking.

Here is what i've tried/observed:

■Temperatures seems fine. GPU at 55-60 C and CPU 40-50 C under load.
■Memtest86 for 24h+ without any errors.
■Run the system with another PSU, same problem.
■Clean install updating all drivers and bios
■Running the GPU with both Legacy and UEFI BIOS

I'm running out of ideas. I've tried searching the forum, most times it seems to be a PSU related problem, but as I've tried replacing the PSU I can rule that out?

Please help, it would be appreciated.

If i left out any details let me know.

Cheers.

EDIT: typo and a few extra details

 

[Ravi idark]

How many years your system is old?

 

[masteranu]

Yeah most of the time it is psu
But as you said you replaced it problem should be somewhere else nah!
And if it's psu related you should get power off instead of freezing
I think problem is in vga
Have you removed it and checked in another pc and do stress test
Or to confirm it is vga related,have you tried use pc without vga card(using mobo vga out)and run stress test again?
I had.something simmilar
But it freeze and gave black screen afterwards
I did baking vga and it worked for me!
I'm not recommending it until you confirm its vga related

There's another probability
Vga receive power from pci slot
And from both 6pin connectors
But some vgas can work only with one 6pin until it requires power more than one could supply
So loose cabels or damaged power socket in vga or mobo is another probability
Just check all connectors again for damages!

 

[adamjosiah]

You fix it with a reboot?

 

[Asgersss]

@Ravi idark
The system is less than 6 months old. So if it's a hardware failure i should be able to RMA.

@masteranu
I'll try and get a friend to test the GPU in his system and run my own system with the mobo GPU. I won't have time to test before the weekend though.
So I should try and run the video card with one 6 pin connector?

@adamjosiah
Yes when it freezes i have to cut the power or push the restart button.

 

[masteranu]

If cabels/sockets are damaged in vga it may already running with one 6 pin power,
That explains freezing because when vga ask power more than 150W it should freeze
(pci-e and one 6pin can only supply 75W each)
I'm not totally sure about that
But it is a probability most people don't notice!
But you can diagnose it easily as you suggested
Most cards able to turn on computer without 6pin connectors
Do this diagnosis
With both 6pin working it can work 100%
With one 6pin working it can run 66% load
Only with mobo pcie power it can run upto 33%
So try plug one six pin connector and turn on
If defect in left six pin socket when you plug cabel into that socket vga only receive 75W and can only handle 33% load
But with other socket it will be 66%
So you will notice difference!
If there's no difference problem is not in power socket
I know diagnose like this takes time
But that's the only thing you can do at home to diagnose
Let us know your results

 

[Asgersss]

Just an quick update, by coincidence i found out the system only crashed when the ram was running the xpm profile.
Guess it wasn't activated when i was testing my rams the first time. But I've testet all the blocks and only one is failing, I've created a RMA for the stick.

Thanks for the help!