I am using a desk computer with Windows XP Pro. something has caused the screen to rotate 90 degrees to the left. How do I get this corrected?

Someone is messing with you. You should have driver settings that allow you to rotate your screen back to correct orientation.

Try following shortcut: CTRL+ALT+UParrow lg Marcello

Hi, Since this is Windows 7 specific forum, I suggest to contact Windows XP forum for further help: http://social.technet.microsoft.com/Forums/en/category/windowsxpitpro The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding. Leo Huang TechNet Community Support