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Z170X-UD3 Memory Issues

Z170X-UD3 Memory Issues
« on: September 19, 2016, 02:00:56 am »
I've looked thru some other threads and didn't really find any resolutions. The issue I'm having is the motherboard will not register or boot with anything higher than 16GB of memory even tho it's supposed to support up to 64GB. I have (4) 8GB DDR memory modules, when I insert 2 (16GB) it  loads and works fine, but when I put the other 2 in, I get error code 55, even if I remove and interchange all the different combinations it loads fine with 16GB, but all 4 and nothing.

So to clarify, all 4 memory modules work fine and are compatible on the list and I know they work because if I put in 2, they work, if I remove those 2 and put the others in, they work, but all 4 together...nothing. They are all exactly the same.

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Re: Z170X-UD3 Memory Issues
« Reply #1 on: September 19, 2016, 03:18:23 am »
I've looked thru some other threads and didn't really find any resolutions. The issue I'm having is the motherboard will not register or boot with anything higher than 16GB of memory even tho it's supposed to support up to 64GB. I have (4) 8GB DDR memory modules, when I insert 2 (16GB) it  loads and works fine, but when I put the other 2 in, I get error code 55, even if I remove and interchange all the different combinations it loads fine with 16GB, but all 4 and nothing.

So to clarify, all 4 memory modules work fine and are compatible on the list and I know they work because if I put in 2, they work, if I remove those 2 and put the others in, they work, but all 4 together...nothing. They are all exactly the same.

So we can get some eyes on this...

Board Rev? 1.0 yes?
BIOS version? (Have you flashed)?
Your CPU?
Are you trying to OC?
The exact model and speed of your memory set?

Please answer the above questions.

Then, disconnect power, perform a battery pull.

Insert 2 sticks in the gray slots

DD4_2, DDR4_1.  Power up enter BIOS.
Enable XMP Profile1 and F10 to save
Allow the system to boot to the desktop
Shut down gracefully
Disconnect power
Now populate the black slots

Reconnect power, test boot.  We might make different suggestions depending on your answers.     
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