New Gigabyte GA-Z170-HD3P motherboard won't POST, reboots after 15 seconds

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Southwest_Dakota

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Nov 3, 2015
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Hey!

First time into adventuring into system building in a while.

Purchased a Gigabyte GA-Z170-HD3P, G.SKILL Ripjaws 4 Series 16GB DDR4 2133, and a i5-6600K Skylake CPU.

With everything hooked up, the motherboard would not POST at all, and reboot itself after about 15 seconds. We discovered that the board would only take one stick, so we ended up RMA-ing both sticks, and ended up getting new sticks, same brand and all.

Ended up discovering that the motherboard will only take one stick in slot 3. The motherboard would not post or boot to BIOS if there was a stick in any other slot, or if more than one stick was installed. I am able to install Windows 10 with just one stick, and the system seems to work fine with just the one stick, but of course, we want them both running!

Any help would be amazing! I am fearing that we send the motherboard back to Newegg, discover that's not the case, but that it's the CPU, then by that time it's too late to RMA it as well. I just hate that my first experience back into building my own computer again has been as bad as this!

 
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SJ70

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Nov 7, 2015
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4,510
I've just purchased the same mobo along with an i7-6700 SkyLake and 4x16GB Crucial DDR4-2133 1.2V RDims

I'm getting similar behaviour (only works with one dim installed) with the exception that the machine also hangs during OS boot.

It would appear that this mobo is either very fussy about the memory it will accept or there is a batch of duff boards doing the rounds!
 
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Southwest_Dakota

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Nov 3, 2015
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4,510
I ended up randomly resolving the issue. The board RAM slot layout is 1-3-4-2, which I have never seen before. I ended up putting dims in slot 2, then in slot 4, and it finally booted to Windows. Been using it for a few days and haven't had any issues since.

It may also have helped that I ended up updating the BIOS as well before re-arranging the RAM, but it's something to try out as well if anyone else has problems with this same board.

 
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BadActor

BadActor

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Oct 31, 2015
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I had similar problems on mine. Would boot from one stick in any slot using both 8 Gb sticks I had, but two sticks was a no-no. 2x4 Gb sticks boots just fine. Manual is confusing, pointing out the RAM slot numbers as you mentioned, but saying to put 2 sticks in same color slots for dual channel. That doesn't jive with their numbering of the slots. I'm thinking the BIOS needs an update to correct the pickiness.
 
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JoEsKI19

Commendable
Aug 4, 2016
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1,510


Hi just wanted to confirm what you said as I had the same problem and found this solution before I RMA'd the board and CPU. Same MB but I went with slots 1-3. I work in IT and when I read the MB manual the RAM placement confused me so I brought the manual into the PC tech at work and he thought the manual was correct, and it was not. Fooled me and 3 other people I know. Anyways thanks and I have no idea how to confirm I'm running dual channel on the DDR4-2400. I
 
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Anton_K

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Sep 5, 2016
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1,510
In my case - it was simply bad contact with one of RAM DDR4 module )))
I thought what it's time to change my PSU (7 years old TT) or it is defect in my new motherboard but...
I opened PC case and touch everything cables and modules. When i touched to the RAM module my PC shutting down immediately
 
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Adam_184

Commendable
Dec 25, 2016
1
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1,510


I had similar problem after computer was working properly. I moved single ram from slot one to adjacent slot (numbered 3) and it booted correctly. I then moved single ram back to slot 1 and now all ok.
 
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