I recently rebooted my computer and this message appeared on the boot screen, twice, one on top of the other, and in red; Degraded NVIDIA MIRROR 931.51G. It only appeared for about 5 seconds, and I have seen it 3-4 times now every time I reboot. Everything is working fine, no problems, so I'm curious what's going on.
Win7 64 Bit
NVIDIDA GeForce GTX 650