Piano sound error

Dear Smart people … I have got problem with Cubase LE5 . Whenver I open the Cubase Piano Sound comes when the Cubase pops up . And whenever I hit the space bar of my Laptop this piano sounds comes over again … Please I need ur help .


Where does the sound comes from? Is it any virtual Instrument? Do you use any Remote Devices (Mackie Control, Mackie HUI, Generice Remote)? Some of the devices send MIDI messages constantly, like “still alive”.