Laptop screen moved 90 degress

  VNAM75 15:49 12 May 09

I was playing a game on my vista laptop (its a 1.73ghz celeron) and it crashed. It was quite mad, everything froze and then there was a loud buzzing sound. I managed to restart it but now the whole of the screen contents (icons etc) has tilted 90 degrees to the left (laying on its side)

The bios startup screen is normal (vertical) but once into the windows login screen, everything is laying on its side. I can still access the files.
What is the easiest way to fix this? Are there any adjustments to the screen I can make like on a monitor, would a reinstall work (I wouldn't have thought so because its not software /hardware related)?

  wis 16:16 12 May 09

the combo of "ALT Gr & Arrow keys" (ALT Gr being so close to spacebar). to correct

  VNAM75 16:16 12 May 09

I sorted it. Right clicked desktop, graphics properties changed rotation from 90 to 0.

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