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Motherboard/PC turns on for a second then turns off


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#1 riahc3

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Posted 09 December 2013 - 12:14

Hello,
 
Well that PC:

PNY VCQK2000-PB
Samsung 840 Pro Basic Kit 256GB
Cosair Hydro H110
Intel Core i7 4820K
ASUS DRW-24F1ST
Seasonic Platinum-760
MSI Big Bang XPower II Intel 2011, X79
NZXT H630
Arctic Silver 5

Turns on (its fans and motherboard lights turn on, not the debug display though) but then in a second turns off.

I have the RAM, PSU, and CPU installed....

So what stupid thing could I be doing?


Thanks


#2 OP riahc3

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Posted 09 December 2013 - 12:19

Hello,

Sadly, no motherboard speaker was included with this motherboard.

#3 OP riahc3

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Posted 09 December 2013 - 12:33

Hello,

And now unsolved:

At least it gives me a debug LED code:


67 = Late CPU Intialization.

#4 +Phouchg

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Posted 09 December 2013 - 12:34

Motherboards don't come with speakers (unless on the PCB itself) anyway. Cases do.

 

What was the problem, though?



#5 firey

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Posted 09 December 2013 - 12:45

Motherboards don't come with speakers (unless on the PCB itself) anyway. Cases do.

 

What was the problem, though?

 

likely forgot the 4 (or 6) pin power connector.



#6 +Phouchg

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Posted 09 December 2013 - 13:07

Did you seat DIMMs correctly, t.i., DIMM1 and DIMM3, if using two, then DIMM5 and DIMM7, if using four? X79 is picky about that.



#7 OP riahc3

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Posted 09 December 2013 - 13:10

Hello,

Using V points on the motherboard, only 0.8 V gets to the CPU. Strange.....why could this be?

Tested the ends of both CPU plugs both give out 12 V

#8 DKAngel

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Posted 09 December 2013 - 13:19

cpu fan seated correctly? my old i5 without fan connect turns on and shuts straight off



#9 +Phouchg

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Posted 09 December 2013 - 13:24

Perhaps the power delivery is borked, so it doesn't give the juice (CPUs don't run on 12V anyway, the stuff around it downsteps it to whatever voltage is requested by VID).

Perhaps you're looking at the consequence not the cause there. Try easier things first.



#10 UseLess

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Posted 09 December 2013 - 13:34

Normally at this stage I start indiscriminately swapping out parts, however I realise that isn't always practical! The PSU is probably the easiest part to swap out for a test. Personally I have found the motherboard is a common point of failure. Do make sure none of the CPU/Mobo connection pins are damaged.



#11 este

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Posted 09 December 2013 - 13:48

Grounding issue with your case? I had a similar problem and until I put my motherboard on the anti-static bag and booted it up that issue didn't resolve itself.



#12 +Phouchg

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Posted 09 December 2013 - 13:49

I put my motherboard on the anti-static bag

 

You did WHAT?



#13 OP riahc3

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Posted 09 December 2013 - 14:16

Hello,

Perhaps the power delivery is borked, so it doesn't give the juice (CPUs don't run on 12V anyway, the stuff around it downsteps it to whatever voltage is requested by VID).
Perhaps you're looking at the consequence not the cause there. Try easier things first.

PSU gives me proper readout of 12 V.


Not too sure what to try here. Tried to check the CPU again and put it in place with the liquid cooler as well but that did nothing.

#14 sc302

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Posted 09 December 2013 - 14:23

powers on for a second then powers off...could be heat related (bad contact to heat sink, too much or too little thermal paste...should be a very thin amount between the two, I spread evenly using a business card as a brush). 

 

Yet another reason not to build computers for your business.



#15 este

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Posted 09 December 2013 - 14:30

You did WHAT?

Worked for ASUS motherboard :shiftyninja: