on many machine, particularly Dells, CTRL-ALT-(arrowkey) rotates the screen for those I guess who have strange mountings or even the portrait mounting of thier screen. IIRC down arrow does 180 degree change, rt and left do +/- 90 degree rotations.
I found that out acidentally on my wife's Dell when in a fit of rage I banged on the keyboard and then could not get the screen upside right again.
there's a place in the setup where you can disable this... for those of you that it doesn't work, this may be the case. I disabled it on my wife's computer; can be real frustrating if you get there accidentally and can't get it right side up again, especailly if yo have a laptop and the display is hard connected to the keyboard...
“Doctors are men who prescribe medicines of which they know little, to cure diseases of which they know less, in human beings of whom they know nothing”--Voltaire
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