my computer screen showing upside down, don't know how to bring desk top task bar and icons to normal. thanks

Oooh, if it's the same thing as we had at work a while ago we had some fun with this. In our case it was something to do with the graphics card drivers - if you held down Ctrl and Alt and pressed one of the arrow keys it'd flip the display upside down, or sideways etc. All the fun in a callcentre. I think Ctrl, Alt and the up arrow set it back to normal.

Hope this helps,

Oh thank you so much it worked, very greatful for ur help. thanks