Windows display is inverted

[david]

After dropping a book onto a keyboard the display is now
inverted / rotated 180 degrees.

I have removed the graphic card, replaced it several times
and reinstalled it, this cures the problem but when the PC
is turned off at end of day then restarted next morning
the display is inverted again.

Does anyone know of a combination or sequence of key
strokes that will rectify the problem?

 

[XMan]

This often different for different screens

Try ALT and the arrow keys
CTL and the arrow keys

Worse case see if the instruction manual for the screen is on the web with
Google etc

Mike

 

[Andy]

Check display setting of your video card.