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Computer not turning on after building

Last response: in Components
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May 18, 2014 4:27:44 AM

Okay, I think I need a bit of help. I got all the parts for my computer. Started building with a test bench. Everything turned on then. The Motherboard worked, the Graphic Card and the CPU. It worked.

I put everything together, and it took a few hours, but everything was put in the case. It was around 1am when I finished, so I decided to put to aside until the morning. Now it doesn't turn on. On top of that, the PSU is making a sound. I can't describe the sound itself, but if I had to make a guess (BUT DON'T HOLD ME TO IT) it sounds like its trying to power up, but can't...

Here is a part list. If you need anything else from me, just ask.

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor
CPU Cooler: Noctua NH-U12S 55.0 CFM CPU Cooler
Motherboard: MSI Z87-G45 Gaming ATX LGA1150 Motherboard
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive
Video Card: Gigabyte GeForce GTX 780 Ti 3GB WINDFORCE Video Card
Case: Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case
Power Supply: XFX XTR 650W 80+ Gold Certified Fully-Modular ATX Power Supply
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer
Operating System: Microsoft Windows 8.1 (OEM) (64-bit)
Monitor: BenQ XL2720Z 144Hz 27.0" Monitor
Keyboard: Microsoft SIDEWINDER X4 Wired Gaming Keyboard
Mouse: Cooler Master Recon Wired Optical Mouse
May 18, 2014 5:15:08 AM

When you bench tested your CPU and motherboard, was this before or after they were screwed into the standoffs? Also, double-check the 24-pin and 8-pin power connectors on the motherboard: I thought I'd bricked my PC the first time I tried turning it on, but it turned out that the 24-pin connector just wasn't in properly.
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May 18, 2014 5:16:44 AM

I've checked the connectors a few times. They are plugged in.

and I did the test before I put it in the tower and screwed them into the standoffs.
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May 18, 2014 5:21:58 AM

ah, the joys of building your own system.
Have you tried with one stick of RAM?
you might have to work your way foreward from where you last tested it adding one component at a time till you find the problem.
I would unplug everything again and try testing your MOBO/CPU combo and if that works start installing one part at a time :-/ it's unfortunate but this way you will be able to find out what part is causing the issue.

Make sure you didn't install any extra standoffs, and see if the MOBO isn't touching the case and perhaps shorting out.

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May 18, 2014 5:35:32 AM

Okay, I did that. And it still doesn't turn on. Maybe it's the PSU? Either way. That sucks if something is DOA
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May 18, 2014 5:53:16 AM

pull it out and test it outside the case again if it doesn't turn on I would guess PSU, the only other options would be MOBO or CPU and as long as you didn't shock those there shouldn't be an issue. Try RMA'ing your PSU and hopefully that fixes the problem
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May 18, 2014 5:55:58 AM

RMA?
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May 18, 2014 6:10:33 AM

Return it basically RMA= Return merchandise authorization.
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May 18, 2014 6:27:25 AM

Zephyrium said:

Make sure you didn't install any extra standoffs, and see if the MOBO isn't touching the case and perhaps shorting out.



I'd second this. Just double-check you've re-installed the motherboard correctly, other-wise the motherboard will be touching the case and the current will be running straight through the motherboard, into the case, back into the PSU and into the ground.
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May 18, 2014 6:29:20 AM

I may not have to refund it. I took the whole thing out of the case, and it turned on. Maybe something wasn't done right in the case, and I didn't realize it. I'll try it again. (Mail doesn't run on sunday's anyways, so I have all day to try and figure this out...)
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May 18, 2014 7:11:03 AM

Thank you Zeph. It works now. It wasn't extra stand-offs, I was just shorting the mono. It was touching something it shouldn't have. Hopefully now, when I put the PSU in the case and plug everything in, I should be good to go.
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May 18, 2014 7:23:36 AM

RedGalaxy00 said:
Thank you Zeph. It works now. It wasn't extra stand-offs, I was just shorting the mono. It was touching something it shouldn't have. Hopefully now, when I put the PSU in the case and plug everything in, I should be good to go.


Yay! A happy ending! I do like it when this happens! :D 
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May 18, 2014 7:51:16 AM

RedGalaxy00 said:
Thank you Zeph. It works now. It wasn't extra stand-offs, I was just shorting the mono. It was touching something it shouldn't have. Hopefully now, when I put the PSU in the case and plug everything in, I should be good to go.


Good to hear!
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