I had been mining away with 4 Compacs for about 9 months and every 3-4 days one of them would Zombie out and I would have to unplug it and replug it in, restart cgminer, and then all was well again. Recently I upgraded that computer with a new motherboard, CPU, and RAM (same Windows install) and now I cannot got 6 hours without one or sometimes all of the Compacs going Zombie. Would you all suggest reinstalling a driver or something else to resolve the issue? Thanks.