Question Bought new ram, won't boot when installed

yahargen

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Mar 12, 2014
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18,510
Decided to upgrade to 32gb memory. Already had one stick of 8gb DDR4 lying around (Corsair CMK8GX4M1A2400C16). Went on to Amazon and bought another (Corsair CMK8GX4M1A2400C14). Installed in slots 2 and 4, won't boot.
Boots fine with just the two new sticks and fine with the two old 8gb sticks (Gskill Ripjaws F4-2400C15D-16GVS x 2). Won't boot with all 4 installed. Both pairs are DDR4, 2400MHz. Mobo is ASUS Prime X370-PRO. Am I missing something obvious? I have ensure all sticks are seated properly when all 4 installed.

Any suggestions would be appreciated. Happy to answer any other questions.
 

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