How can we rotate desktop of the computer screen?
This has nothing to do with your monitor settings as suggested above, it is a windows setting!!!
Right Click on a blank piece of your desktop, in that menu select "Graphics Options" > "Graphics Properties.
That will open a Pop-up Menu, you'll need the 5th tab which says "Rotation" and select the option you want from there.
You can alos try holding down <CTRL> + <ALT> + Any cursor key and that will rotate your desktop too (Up = Upside down, Down = Normal, Right = 90 deg clockwise and Left = 90 deg anti-clockwise)
Hope this helps
Right Click on a blank piece of your desktop, in that menu select "Graphics Options" > "Graphics Properties.
That will open a Pop-up Menu, you'll need the 5th tab which says "Rotation" and select the option you want from there.
You can alos try holding down <CTRL> + <ALT> + Any cursor key and that will rotate your desktop too (Up = Upside down, Down = Normal, Right = 90 deg clockwise and Left = 90 deg anti-clockwise)
Hope this helps