I left the computer and came back to my screen upside down on the monitor.
Still works but I have to stand the monitor on its head. Can anyone tell me
how to rectify this? I am computer illiterate - please make it simple.
Several display drivers offer the "rotate" option. Sounds like your screen
has been rotated 180 degrees. Try a right click on the desktop and select
properties to bring up display settings. Look around under Settings and
Settings>Advanced for the option to rotate the screen back to normal
position.
NOTE: Often there are "hotkeys" associated with the rotate function. An
unsuspecting user pressing those hotkeys will be surprised by a rotated
screen. When you uncover the location of the rotation settings, you may
also find a setting that enables/disables the hotkeys. Adjust this to your
liking.