I've been struggling to get my rig to work for two weeks.  It was mining fine 24/7 for days at a time.  Then it froze, and ever since then it'll mine for a minute, two cards will go to zero hash rate, and Windows freezes.  Tried reinstalling drivers.  Connecting them in various orders.  No one card seems to be causing the problem.  I'm at a loss here and this thing is sucking up all my time.

Win10, rx580s (one 480).  1000W evga psu.  Biostar mobo.