Custom-built computer wont start

October 3, 2014 at 07:45:46
Specs: Windows
Hi. I need an advice.
I bulit a custom PC from following parts

MOBO:ASUS Z87 pro
Proc: i7 4970k
Power supply: Cooler Master v700 (700w)
RAM:DDRAM3 16GB (2x8GB) Kingston 1866MHz HyperX Fury Black
No GPU yet.

Other parts are irellevant.

I have everything connected right, I was following linustechtips build guide but computer wont turn on. The power button works on MOBO as well as on case. Fans starts spinning for fraction of second and then stops. No beeping or any other sound or led warning/information. No error code (just 00 which according to manual = not used). I tried everything - i unplugged SSD and HDD, I unplugged one RAM stick, than i changed RAM slot couple of times but nothing works. I removed cpu cooler and check for any visual damage, i also tripple checked connection to MOBO and and cpu from psu... Nothing worked yet. I am hopeless pleas help.


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#1
October 3, 2014 at 08:46:59
Obvious question: When installing your MB, did you remember the risers? It sounds like you have a short.

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#2
October 3, 2014 at 08:50:10
yes, i had them. To eleminate this problem i tried to boot outside the the case and nothing changed.
http://imgur.com/SNWpaFm

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#3
October 3, 2014 at 11:13:54
You should have bench-tested the hardware before you installed it in the case.

"I removed cpu cooler and check for any visual damage"

OK, after doing so, did you remove all traces of the old thermal material, then properly reapply a line of thermal paste?

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#4
October 3, 2014 at 12:07:14
Keep just enough hardware installed for a POST. This is typically just CPU, 1 DIMM, Cheap $20 video card, and PSU. Ideally on a test bench.

When observing the CPU for physical damage, did you see ANY marks on it? If so, it's damaged.

When observing the CPU for physical damage, did you check the MB pins? Any bent pin, no matter how slight, can cause problems.

I've had problems with ASUS MBs in the past. On first boot, the MB would reset its DIMM voltage to the lowest possible setting. This was solved by booting off of a cheap DIMM and configuring the BIOS' memory settings to be compatible with my desired DIMMs. Something like this: http://www.newegg.com/Product/Produ...

You could just have a bad MB. See if you can't RMA the thing.

Also, if you have a volt meter, check the PWR_OK signal. Should be 5V ± 0.25V within half a second of the power button being pressed. (Technically from when PS_ON# is grounded out, but details.)

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#5
October 6, 2014 at 01:55:44
My son just built a system with almost identical specs and had the same 00 code issue.
Fortunately he had access to another system with compatible components and was able to test his new CPU in a known good board, and test a known good CPU in his new board. The CPU turned out to be dead out of the box.

Goin' Fishin' (Some day)


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#6
October 7, 2014 at 03:09:15
Update to my earlier reply. It turns out the CPU is OK. Bios version that came pre-loaded on that motherboard does not support the latest CPU. It is necessary to update the bios so that the CPU will work. Catch22. You need a working CPU in order to boot the board to update the BIOS.

Goin' Fishin' (Some day)


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#7
October 7, 2014 at 06:37:15
Wow, so same issue I had back in the Core Duo 2 days, only with a more expensive component.

ASUS recommends only professionals purchase and install their motherboards, and I guess that's fair. A professional should be involved in some stage of the process, and there doesn't appear to be one on the ASUS end.

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