Oh yes, I've mucked about with the drivers to no end, including updating as well as completely removing and installing them from scratch.
I have found a new clue to the puzzle, however. I only get the error upon startup if, when I am shutting it down, I go ahead and close the screen before it's completely done. If I let it sit with the screen up for at least a full minute, until I am completely certain that it has 100% turned itself off, then when I turn it back on I get no error, and I don't get the random driver failures while it's operating. If I get the error, it claims it's fixing itself before it actually boots and all is well, but I will continue to get the graphics driver failures until I shut down and reboot properly.
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