Hello!
I have no anti-virus software. This is a vanilla install of Windows 8, fully updated, eventually, to 8.1. I have installed some essentials: Steam, Origin, nVidia Experience, Google Drive. If I can't run 8.1 with those, then I don't want it :) That being said, I had trouble installing the update in the first place on a vanilla 8.0 install.
I have uninstalled and reinstalled the drivers. I did not encounter an error for a few days, but then it suddently appeared again - anywhere between 1-3 minutes after boot, the system locks up.
I checked the event logs and found "The local adapter does not support Bluetooth Low Energy." This doesn't seem critical, but it's the only thing that consistently appeared before the crash. I have now disabled my Bluetooth adapter from the BIOS. I have not experienced a system lock up since I made this change, but it's only been about 30 minutes.
Other users with my hardware have indicated that this was an issue with installing (as I had), so I'm hopeful.
Thanks for the advice, though welcoming more input.