Rumor has it that hitting the Esc key on your keyboard 3 or 4 times, helps.
IDK why. Seems weird to me but I thought I would pass it along.
Basically the assumption is that your Esc key is malfunctioning or your keyboard needs the correct driver installed if there is something unusually unique about it.
Like holding the Esc key and attempting to drag a desktop icon, prevents it from happening.