I have a Ligitech keyboard with lots of buttons on the top. Buttons I NEVER use... one of them reboots my computer, one knocks off my screen, one makes my calculator pop up etc. How can I stop their functions? At least once a day I bump one of them by accident, usually while putting the keyboard on the slide out drawer or picking it up from drawer. I don't want a new keyboard because I like this one.... the new ones in the store have the keys too close together.