System shutdown when putting load on GPU

[honami]

Hey everyone

I've got an ECS H81H3-M4 motherboard with Intel i5-4590 processor coupled with AMD Radeon R7 240 graphics card. It's a newly built low budget (I'm a student) system.

The problem is that when I stress the graphics card the system shuts off instantly, as if power supply failed to cope with that power draw. I had no name 400w power supply so i figured it couldn't provide the rated capacity so I went and bought second hand Corsair VS650 650w power supply, with it's warranty sticker still intact. But the system still shuts down under graphical load.

Things I've tried:

- running memtest86+, 1 pass, no fail

- stressing CPU with prime95, processor pulled 90w but system still worked

- undervolting in BIOS settings, no effect (since stressing CPU didn't cause system to fail i believe CPU isn't the problem)

 

The same graphics card works just fine with my older build (intel H55M chipset with i5-520, one of those weird motherboards that was shown in LTT channel recently).

The other problem is that the motherboard can't reset/reboot without hanging, I have to force shutdown the system when restarting Windows or after saving BIOS settings.

 

Any ideas what is the problem and what can be done?

Cheers from Turkey :)

[honami]

13 minutes ago, LloydLynx said:

This might be completely off the mark, but is the CMOS battery still good?

cmos battery is fine

[honami]

I cleaned the socket pins (bent some, almost shat myself that i broke it but repaired), then i noticed CPU is a little bent around corners and i can see a crack on the PCB. Not a great finding. Pins are fine tough.

[honami]

Just now, LloydLynx said:

Try removing the graphics card and using the integrated graphics. Does it still have issues?

Integrated GPU works fine, sorry if I didn't mention.

 

[honami]

Just now, LloydLynx said:

In that case, where the crack is might be the pins that control the PCIe bus. Do you have another CPU to test with?

Quite possible, yes. No, unfortunately I don't have another CPU

[honami]

This is the corner the crack is affecting I think.

[honami]

The thing is that I'm already out of my budget and now I am asking the seller whether he could test the mobo himself.

 

[honami]

Probably i'll just return the mobo if i can

 

[honami]

CPU is cracked, I bought the mobo with the cpu from a guy, and I'll have to return both.

[honami]

A neat site I found when looking for LGA pinouts.

https://sector.biz.ua/docs/lga-775-1150-1151-1156-1155-1366-2011-pinouts/lga-775-1150-1151-1156-1155-1366-2011-pinouts.phtml

 

 

[Magnetron HD]

The CPU could have a GPU connection issue due to the crack, or if the CPU is fine, then you've fried the graphics card. 

[honami]

10 hours ago, Magnetron HD said:

The CPU could have a GPU connection issue due to the crack, or if the CPU is fine, then you've fried the graphics card. 

It did have problems, only became apparent when under load. Furmark with 640x480 resolution was enough to shut the system after 1 min or so.

 

The graphics card is completely fine, I'm using it right now.

[honami]

I have since returned the motherboard with CPU and got refunded. Not gonna be my problem anymore. At least I know what to look for when buying processors and motherboards second hand.

[honami]

update: i did buy the same motherboard from different person, same issues even with a different processor. apparently the motherboard model is incompatible with my graphics card.
now rocking an asus motherboard with same chipset, no issues.