Z170 boot fails with 32GB memory (error code 55)

This took forever to find when I had issues getting my new Z170 boot to work. The issue was specifically because of having 32 GB memory.

I eventually stumbled onto the thread below (after a lot of fine-tuned search engine keywording). This is the specific relevant comment below:


In case the thread gets lost, I’m wanting to keep a copy of the steps in case I encounter it again.

Do the following steps:
– remove battery & clear BIOS
– insert module into slot 1
– boot and change XMP to Profile1
– insert module into slot 2, then boot
– insert modules into slots 3 and 4, then boot
Now 32 GB should be recognized.

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