ROFL, I changed the riser board of the card that was crashing, swapped 2 GPUS and now the rig has gone totally mental.
Two other cards are failing, the rig crashes as soon as I start the miner... this is getting out of control.

I will maybe re-install windows, as when I restarted the rig the first time I took the card, it installed a "critical " upgrade, which took around 40 minutes and ever since then my Windows started acting like a fool..