Upside Down computer screen
Some of my friends reported that their computer screen became upside down.
The kids made it. Usually kids play a lot with keyboards while playing games on it.
To fix flipped screen of computer, you just need to press Ctrl + Alt+ Arrow key.
Using Ctrl+Alt+ any arrows keys you can rotate the screen of computer. It's not a bug or virus.
It happens with Dell LCD and other monitors. This allows your customer to view the screen from their angle of view.
Many post suggested that there is a settings at disply properties. I haven't seen it anywere except this trick
to rotate monitor screen.
You can simply reposition the screen by pressing ALT+Ctrl+Arrow keys simultaneousely.