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Question

Power Supply Unit problem

Mar 25, 2016 10:54AM PDT

Since yesterday I have a new power supply and graphics card. Obviously, I started to install immediately. The graphics card has given me no problems, the PSU though.

To make anything clearer, my specifiations ...

- Processor: Intel Core i5 - 750 - 2.67GHz
- Motherboard: Gigabyte GA-P55A-UD6
(- Old psu: Antec EA 380D Green - 380 watts)
- New psu: EVGA Supernova 750 G2 - 750 Watt
(- Old graphics card: GeForce GTS 250)
- New graphics card: EVGA GeForce GTX 960 SSC 4GB
- DVD writer: Samsung Super Rite Master SH-S223
- HDD: Seagate Barracuda LP 2TB - ST32000542AS
- SSD Samsung 840 EVO 250GB

I connected everything properly according to the manual. Also watched some videos on youtube to make sure I made no mistakes.
And then the moment of truth. I start the PC for the first time and after some "stutter" it succeeded to boot completely. It was late at that time and shutted down the PC after half an hour (after installing video card) plotted with the intent to do more today. No sooner said than done so, PC started up again and after less than fifteen minutes the PC just fell off. It is no longer managed back to boot, the psu refuse service. Only the fans are working for a moment but that's it.

And now the questions.

Could my psu be damaged? Is it too much voltage for stabbing what I have into my PC? I took the 750W psu with the intention of later stabbing a 2nd video card.

Is it my PC cooling? The power felt something warm after all. Which cooling would you suggest? I'm not exactly aware of what is good or not.

Could it be something else that caused this?

All answers and tips are welcome!

Thanks in advance!

Discussion is locked

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Answer
Parts look OK so
Mar 25, 2016 1:42PM PDT

This might be a self built. I've run into this and once in a while find an extra mounting post under the motherboard. If this came across my view I'd pull the motherboard for a check.

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Power Supply Unit problem
Mar 25, 2016 1:52PM PDT

Thanks for the reply!

You think the motherboard is not good enough anymore?

Could it be a solution to do some overclocking? I really don't know...

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Power Supply Unit problem
Mar 25, 2016 1:54PM PDT

And indeed, my desktop is a self build. (Not done by myself)

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Overclock?
Mar 25, 2016 2:13PM PDT

That's something I leave to those that want to try. I don't and have no answers there.

My thought is that too many self builts were found with an extra post. The only way to tell is to disassemble and check. While I've there I put the machine on cardboard and test there. If it fails there I remove parts till it behaves. For example we don't need more than the boot drive, and you have your older GPU to try too.

Work backwards or on cardboard to see what it is.

Also, the motherboard has more than one PCIE 2.0 port. try the other.

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Power Supply Unit problem
Mar 25, 2016 2:18PM PDT

Okay, I'll try and see what it gives. Thank for the support!

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Since you still have the old PSU,
Mar 25, 2016 4:14PM PDT

put it back and see what happen. If it works ok then you know it's the new PSU problem.

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Answer
Power
Mar 25, 2016 7:53PM PDT

Put the old gpu back in the machine.
If it still won't power correct put the old psu back in the machine.
If it still won't power correct you've got something else wrong.
Recheck your work.

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PSU
Mar 26, 2016 12:38AM PDT

The old psu boots it al properly up so I guess my new psu is probably damaged. That's a shame after only 2 days. Especially because I've read positive comments about the Supernova.

Going to contact EVGA for a solution.

Thank you all for the reply's!