Suspected keyboard keys seem strange, through the keyboard test tool can know you own health of the keyboard. Please press each button one by one, if not virtual keyboard display does not change the color of the key is a complete failure of the key; Followed by the normal speed of the key several times, if the original failure of the key display becomes normal blue on behalf of the key contact bad, If it turns red, it means that the key has a "bounce phenomenon" and is a precursor to the fault.
Key Pressed | Press Time |