Just to clarify, it wasn't after setting a non monitor native resolution, it was simply after the 10m idle monitor sleep, it would refuse turn on again. No error no event viewer is logged. I'll try your suggestion, even if it seems unrelated. Most workarounds for this are usually changing pci-e power link settings, or disabling ULPS with varying results. I've had this problem since I got this card early this year, starting with the 13.12s, even if only once or twice in a week.