Mouse randomly clicks on its own

Please help me . my mouse clicks on its own. I have a samsung laptop running on windows 7. I tried to use the touchpad ot does the same thing, i tried using an external mouse but its still the same. I already tried to change the settings for the mouse in the control panel, i set the double click speed to slow i have the click lock on, but still everything is the same. The mouse still clicks on its own. Anyone, help me