Flashed UEFI on my new mobo, maybe that'll straighten it out, I dunno yet. Hit a snag initially by the ASUS EZ flash thingy allowing browsing of NTFS devices but not actually flashing from them - bizarre! And the error message shown was not just unhelpful, but actually outright deceitful. "Not a UEFI bios file" it said, which totally threw me off, thinking the BIOS was damaged when it was just ASUS' dumb programming that was at fault. "EZ" flash, indeed!
Formatted an old USB flash stick to shitty old FAT and copied UEFI file there, and it worked fine.
Had to re-do all the tweaking of course - which considering the millions of settings is no small feat. UGH! Whunked RAM back up to 2400MHz - something which made it quite unstable previously, let's see if it's stabilized now. Running just one day without a bluescreen isn't much of a track record, my PC could work fine for a couple weeks with the original manufacturer's BIOS and RAM set at 1866MHz without any issue, then it could suddenly bluescreen thrice in a day or two. Completely unpredictable (which you just love, I know I do! ...Not.
)
Hit another snag from intel storage matrix whatsitsname throwing an error when booting back into widnwos - and the troubleshooter threw an "unknown" error too - awesome!
Maybe there's a well-hidden setting somewhere that I missed that's causing this. Like, UEFI not being enabled, but I looked and looked and couldn't find a setting to toggle it so I just assumed that it was on. *shrug*