New build wont start at all please help!

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Militie

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Jun 5, 2013
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Here is my build:
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Outlet PC)
Motherboard: ASRock Z77 Pro4 ATX LGA1155 Motherboard ($94.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Newegg)
Storage: Samsung 840 Pro Series 256GB 2.5" Solid State Disk ($219.98 @ Mac Mall)
Video Card: Gigabyte Radeon HD 7970 3GB Video Card ($399.98 @ SuperBiiz)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: Cooler Master Silent Pro M 700W 80 PLUS Bronze Certified ATX12V

This is not the first computer I have built. It's the 3rd, this is the most expensive though so I am really needing it to work right now. The problem is that after I turn on the PSU and get ready to turn it on, it turns on for 1/2 of a second. One of the LEDs on the front panel turns on, and then just fades away. The fans on the heat sink and GPU fans dont even start. Anyone know what is going on?!?? Please help I have been saving up for this thing for a year.

Thank you.
 
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vertexx

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Apr 2, 2013
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Bummer.... My 2nd build had a DOA PSU - major letdown to get everything put together and nothing works. Lesson learned - do some simple testing of components before you assemble everything.

Easiest test is the PSU. You can google a number of tests. Here is a link to a very simple paper-clip test (http://dodji.seketeli.com/downloads/shuttle-psu-paper-clip-test.pdf). It does entail disconnecting your PSU from everything.

If the PSU passes this test, then try to just hook up your Mobo with CPU and power switch connected. It's possible for it to be something as simple as a bad power switch (i.e. all it does is create a short, so if the short doesn't hold, then you'd get a momentary power on, followed by a power down). You can simulate a power switch by shorting the two wires across the power switch (there's usually something exposed you can use.) If it still doesn't hold power, then it would be the motherboard.

Then you would need to add in each component to see at what point it fails.

Easiest case is if its a bum PSU like I had.

In that case, it was easy for me to do the RMA through Newegg. I even sped up the process by getting on the phone, asking for a refund, and buying another PSU outright. They basically cross in the mail and you get your refund when the old unit is received. You want to be sure that's the problem though, or they'll send it back to you and you'll be stuck with the PSU.

Hope that helps......
 
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vertexx

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Apr 2, 2013
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Funny - the PSU I was referring to in the above post that arrived DOA was a Cooler Master. I replaced it with a Corsair.
 
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M

Militie

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Jun 5, 2013
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I just did the paperclip test, it seems to work completely fine. The fan runs at full speed, doesn't let up even after a min or two. I am thinking its the Motherboard. I will turn it on and it does seem to short and just fade out like you said vertexx. Should I take it apart and put it together piece by piece or would a bad motherboard really be the only alternative problem? Oh and I tried to short the power switch to manually start it up. Nothing happened whatsoever.
 
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vertexx

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Apr 2, 2013
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Best thing would be if you have a known good PSU - try to power the Mobo with that. If you've disconnected everything except the CPU, CPU Fan, Power Switch, and it won't power, you've pretty much narrowed it to the Mobo.

It's still possible that the PSU passes the paper clip test, then fails as soon as any load is drawn. The only way to be completely sure is to try to power one of your known good systems with your new PSU, or to try to power your suspected defective Mobo with a known good PSU from another system. But that's potentially alot of work.

I haven't had a bad Mobo yet, so I don't know first-hand what level of proof they need to RMA. May just try to get on the phone to see what they require in the way of testing for a bad Mobo.

Here's a sticky for overall trouble-shooting - probably good to look over to help you check everything over.

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Best of luck.
 
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