IP35 Pro RAM Issues?

Durn

Honorable
Jun 5, 2013
3
0
10,510
I'm using an IP35 Pro to test a bunch of pulled memory.

The 6400U and 5300U sticks all checked out fine, but when I put 4200U sticks in, the board refuses to boot and gives error C1, indicating a RAM issue.

I've tried this with the 20+ 4200U sticks I have, and have a hard time believing every one of those sticks is bad.

Does this motherboard refuse to boot under anything lower than 5300? The manual mentions nothing of the sort.