It is really strange that my system has been steady for months. This morning I booted it and got a black screen with no cursor. I did get the startup sounds, so I am assuming the video was not being sent out, even though the monitor showed a signal present.
When I check the event viewer, it had one of the nvlddmkm errors. A reboot fixed mine, but maybe something is going on. I have been changing drives around in my system, so something might have gotten corrupted along the way.
If yours continues to have problems, there may be a problem that is corrupting your install. If you have not done so already, I would set Windows Update to only do important updates so you can check the optional ones for hardware, mainly video, drivers before they are installed.