My desktop wallpaper...

I know how to change my desktop wallpaper. Go to my pics, right click on pic, select "set as desktop background." duhr....

BUT

I just tried to change it, and it doesnt change, it stays with the original pic. any idea why this is happening?

*moves to Computer Help forum*

And I have no idea why it would do that.

Not sure why that is happening, have you tried just using the desktop properties window?

You may try right-clicking on your desktop, properties, desktop tab, choosing one from the drop-down menu to see if your desktop will change then.