Question Computer Keeps Cycling to MB Setup Screen

Oct 24, 2019
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A retrofitted build keeps cycling to the Gigabyte GA-MA770T-UD3P ATX Rev. 1.0 motherboard splash screen when I either put 4 identical sticks 8GB modules of DDR3 1600 MHz 9-9-9-24 RAM or combine 2 sticks of that with 2 sticks of DDR3 1600 CL 10-10-10-30 RAM in it. It boots fine if I only have 2 sticks (16 GB of either brand) in it. I can even put 2 sticks of the 1600 CL 10-10-10-30 RAM in plus a stick of 4GB DDR3 1333 and a stick of 2GB DDR3 1333 for a total of 22 GB. I thought I saw somewhere in this old MB manual that it only supports 16 GB, but it has no problems with the 22 GB configuration and also does correctly show the 32 GB configuration in the BIOS setup. What's even stranger, is that I have been able to boot it successfully twice with 32 GB and the (Ubuntu) About screen does report the correct memory size. Also, since the 2nd successful boot with 32 GB, I've let the computer go to sleep and it has waked successfully several times. I'm afraid to do an update or anything requiring a reboot as it will likely get stuck at the MB splash screen again. Where it gets stuck is right after something like "...updating DMI..." (what I can barely catch just before the splash screen pops up). I was trying to pause the screen by pressing Ctrl-S to read the boot comments when it successfully booted the 2nd time, so I wonder if it could possibly be the delay in booting to the drive, but there is no drive delay parameter in the BIOS setup to increase.
 

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