My screen suddenly turned 90 degrees, how to turn this back?

I inadvertently slipped my hand on the side, swipe across to the bottom line of the keyboard, which lit the carpet mouse and apparently hit some of the function keys, causing the entire screen to rotate 90 degrees, so that the top of the screen faces the left side of the screen. the entire screen, background and everything. Can someone tell me how to rotate this return? Thank you. HP pavilion dv6 notebook PC, windows 7.

Hello

Hold down the ctrl and alt keys and press the arrow pointing upwards.

Kind regards

DP - K

Tags: Notebooks

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