Computer Screen Has Rotated 90 Degrees

[arjay]

My other Dell laptop computer screen has rotated 90 degrees.It happened once before and a friend corrected by a simple operation in seconds. Unfortunately he is on holiday.
If you have any suggestions as to how I can correct this fault, please let me know.
The computer is still under guarantee but Dell are closed today.
Thank you.
Robert

[fiction-factory]

Try holding down Ctrl key, Alt key and upward arrow. See if that works.I am sure it's something like that

[Old_Geezer]

Unsure all PCs are the same but try :
CTRL + ALT + Up Arrow.

Worth a try,

[Old_Geezer]

Other options
http://www.wikihow.com/Rotate-Your-Computer-Screen

I'm sure this has been answered before here but no "related questions" below ?

[Prudie]

I have a Dell and the Ctrl + Alt + arrow keys does work. My cat makes the screen do that regularly when she walks across the keyboard.

[Old_Geezer]

I tried it on mine before posting. Does nothing to my screen which is why I hesitated. Different PCs different keys I guess. Or maybe different graphics cards ?

[RATTER15]

CTRL + ALT + Up Arrow. works on mine ok.

[arjay]

Thank you for your prompt and helpful answers,fiction-factory, Old_Geezer, Prudie, and Ratter 15. I am really grateful to you all for coming to my rescue by the Ctrl Alt key + upward arrow.

[jno]

you can sit up now, arjay, no need to lie on one side any more!