So, I have an Alienware Aurora R4 with Windows 10.
1. I tested my RAM (4 sticks of 4GB each) with memtest86 and got like 400+ errors (I know, awful).
2. My BIOS is version A07 and the most updated version is A11. I tried running the BIOS update executable,
Sounds like you have at least two different issues (or your motherboard is toast).
1. That's crazy. I don't think even an old BIOS would cause that.
Both sets do that?
You want PassMark's https://www.memtest86.com/ ... not the other one.
2. Right, always try just the next one ... A08 or A09 (whichever is next). From DOS is safer.
That error makes me wonder if the file is incorrect or corrupt on server.