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Question

PC fails to boot numerous times before booting

Feb 25, 2016 4:52AM PST

Hello. I've had this same problem since I built my build 2 years ago. I tried to google it and fix it plenty of times, and deciphered that it's probably a problem with either the PSU, mobo, or CPU. Basically every time I switch on my computer the fans spin up as though its going to start then cuts out, does this for random amounts of time, could do it twice, could do it 50 times, before booting. I could never fix it so I just left it be, but I last night just had a HDD failure and SSD failure at the same time (I think it may be due to this problem, perhaps?) anyways, I'd like to determine what is causing this constant cutting out. Here's a video for reference (Nothing appears on the monitor not even the mobo logo)

https://www.youtube.com/watch?v=on3_QgYYmw0&feature=youtu.be

Specs:
CPU - Intel i7-4790K Quad Core 4GHz
GPU - MSI GTX 970
MOBO - Gigabyte Z97M-D3H
RAM - Corsair Vengeance Pro 8GB
PSU - SuperFlower Golden Green HX 550W
HDD - Western Digital 2TB
SSD - Crucial MX100 256 GB

Discussion is locked

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Clarification Request
Have you tried it with the on board graphics?
Feb 25, 2016 7:56AM PST

If not, pull the graphics card and run it with that load. If it works fine, you could have a marginal PS for the system. It does appear that your PC is designed to OC. For problems with those system, stock settings are a good thing to try. My first thought when hearing of your symptoms was bad capacitors but yours appears to be too new for that.

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Answer
Power on
Feb 25, 2016 7:35AM PST

Psu+mobo+cpu/hsf....nothing else connected.
Short the power on pins on the mobo for a second or so.
If it powers up start adding parts.

If not remove the mobo and put it on a piece of cardboard.
Repeat the test.

If still no power up your down to 3 parts.

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a
Feb 25, 2016 6:53PM PST

Thanks guys I'll give your suggestions a shot and report back in the morning.

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Answer
Still not working.
Feb 27, 2016 9:10AM PST

So I ran it with just the PSU the MOBO and the CPU and the problem still persists. I reset the CMOS and that also didn't help, any suggestsions? I was thinking perhaps my PSU doesn't have enough juice? Although I calculated the wattage on a website and it said I have enough power. Other than that the only thing I can think of is the MOBO being a mini itx, although I don't think that's really a problem?

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Still not working
Feb 27, 2016 10:07AM PST

Did you do this test with the mobo on a piece of cardboard?
If no...you missed a step.
If yes...your down to 3 parts....pick one change it.
Just for yuks change the bios battery there only a few bucks.

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If what you posted is correct
Feb 27, 2016 10:23AM PST

then it means your CPU is probably burnt.