I don’t think Foxconn is in the motherboard business anymore. I found an email address on their website, and my message bounced. I tried contacting Foxconn support to ask about a potential BIOS fix, but didn’t receive a response. RAM tests passed just fine too, so it wasn’t a matter of bad RAM. Dropping the RAM back down to 8 GB resulted in a successful boot. This computer doesn’t support 16 GB of RAM. Trying to boot from a Windows install USB stick resulted in the same error. The ACPI tables tell your operating system how to set up the hardware among other things. I did a bunch of Googling, and basically the gist of the error is that something is wrong with the ACPI tables in my BIOS. The Windows boot screen briefly showed up, and then I was immediately greeted with a Blue Screen of Death. When GRUB came up, I navigated to the Windows 10 menu choice and hit enter. I only occasionally need to boot into Windows to check something out. Then, a few months later, I tried to boot into Windows 10. I enjoyed having all the extra RAM to work with and was happy that my gamble paid off. I decided that my theory about the motherboard actually supporting more RAM than the documentation claimed was correct and forgot about it. Then, I booted it up into my Ubuntu 16.04 install and everything worked perfectly. I made sure the BIOS was completely updated (version 946F1P06) and put in my two 8 gig sticks. In a lot of cases, motherboards do support more RAM than the manufacturer officially claims to support. It only has 2 slots, so I had a suspicion that 8 GB sticks just weren’t as common back when this motherboard first came out. The specs on the page I linked indicate that it supports a maximum of 8 GB. This motherboard doesn’t officially support 16 GB of RAM. It’s old and could probably be replaced, but it still works for what I need.

The computer is using a Foxconn P55MX motherboard with a Core i5 750. A while ago, I put 16 GB of RAM into one of my computers.

Foxconn n15235 bios update