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Home built Desktop won't post after working for a year

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December 25, 2012 4:38:18 PM

Good morning and Merry Christmas,
I am looking for some advice with regard to my homebuilt computer that has recently stopped working (It is about a year old). The problem is that when I push the power button, it will begin to start (lights and fans), then then almost immediately turn off. It will stay off for approx 5 sec then cycle the same way without posting.

I walked through "perform these steps' post and ended up at breadboarding the mobo, cpu and hsf. It still cycles on and off with no beeps at all.

I tested the PSU. It is operating while green and black paperclipped and fan connected, and I also tested the wires for voltage and they are all reading correctly.

I am not sure where to go at this point. It would seem that I am looking at replacing a mobo, cpu, hsf, or some combination of all three. Before I do that though, I thought I would ask if I can get closer to the actual component that is inoperable or if I need to just start replacing items. If I do, do I need to replace all three, or start with one at a time. If that is the case, where do I start?

- Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000

- GIGABYTE GA-Z68XP-UD3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

- ZALMAN CNPS9700 LED 110mm 2 Ball CPU Cooler

- Antec EarthWatts EA-650 GREEN 650W ATX12V v2.3 SLI Ready CrossFire Certified 80 PLUS BRONZE Certified Active PFC ...
December 25, 2012 4:54:13 PM

intel 3570k
asrock z77 extreme4
coolermaster 212 evo
xfx 550 or 750

they are the most popluar combination here :) 
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Best solution

December 25, 2012 5:19:18 PM

It's the motherboard, I'm sure.
Double check by using the same processor in a similar computer.
(This happened to me once, go to a local computer repair shop, and ask if they can test if the processor works.)
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December 25, 2012 5:43:16 PM

^ follow him to save you from wasting money :) 
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December 25, 2012 5:45:06 PM

If I do need to replace the mobo, does anyone have suggestions for a replacement?

- Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case

- G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

- EVGA 01G-P3-1372-TR GeForce GTX 460 (Fermi) Superclocked 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
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December 25, 2012 6:42:46 PM

asrock z77 extreme4 is still a good choice, it will work with your older 2500k
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December 26, 2012 5:22:26 PM

So I followed Kiowa's advice and took the mobo/cpu/hsf to repair shop and determined the mobo was the problem. Replaced it with the asrock z77 extreme4. Successful breadboard so installed everything and looks like I am close.


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December 28, 2012 2:59:09 PM

So I followed Kiowa's advice and took the mobo/cpu/hsf to repair shop and determined the mobo was the problem. Replaced it with the asrock z77 extreme4. Successful breadboard so installed everything and looks like I am close.

At this point, windows is asking to run startup repair, which I can run, but when I do, the mouse and keyboard stop working so I can't do anything further. My plan is to try repair off the Windows 7 DVD, but before I do, I wanted to ask if I should be concerned about possibly losing information on my HDD. I have an SSD for windows 7 and a separate HDD for everything else. Would I be better off doing a full reinstall?
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December 29, 2012 7:15:01 PM

Figured out that my mouse and keyboard were in operable because I was using USB 3.0. Switched to 2.0.

Tried to run startup repair, but ulitmately had to do a clean install of Windows 7. Backed up my HDD, but so far it is intact since Windows was on SSD drive.
Thanks for the help!
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January 7, 2013 7:22:37 PM

Best answer selected by Xfactor56.
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!