Another day of testing.
I decided to change the power for the risers to SATA (2 risers per), that seems to have helped upon boot. Not sure if the 8 to 6 pin plugging into the VGA ports of the power supply was messing things up, however all 3 cards come up faster/properly at boot.
I've been messing around with the Gen1/Gen 2 option, as well as the PCI bus speed.
I increased the page file.
I ran the system with 1 card and it ran fine for an hour, currently trying out another card/riser solo as well to test it. Currently making sure there are no card/riser issues currently just to completely rule that out.
I updated the drivers to the latest (I think I was a version back as I installed them from a USB drive).
The issue just seems to be when I add cards to the system. When I start mining with 2 cards, the system hard freezes about 5 mins in or so.
Trying to get 2 cards to work first then will try to add the third.
It really does seem to be a driver issue / software issue, but can't seem to pin point it. Still just working on ethereum at the moment. Need to get another pool up to test.