Alright for the last few hours, I've been trying different things here and there. The biggest problem is the GUI will not load at all (with a monitor & KB plugged into the server with GUI mode running & the web GUI) and I kept finding corrupt config files on the flash drive.
So i loaded a fresh install of Unraid, followed the instructions list on the wiki to transfer the few non corrupt settings i wanted to get the array back up and I'm getting whatever the hell THIS is every time I boot off this machine lol
I booted two more flash drives, on different ports on this server with the same results. I can boot from either of these flash drives off 2 other machines, so I know the drives are good. I'm back to running an extended memtest.
Something has to be wrong on the hardware? No bios changes were touched.