When i use my macbook pro in the bed,my hands usually support the bottom of macbook , it usually cause my wifi turn off. I removed the bottom cover of macbook,and found the wifi card connector is in the centre of bottom just where my hand usually support. I turned on macbook to test and found once I press the connector the wifi would be off and never be turn on until restart same result when I unplugged the connector from interface. So that is the cause of the problem! Does the wifi cad have to restart to be turn on back? Why just pressing the connector of wifi card makes wifi card disconnect from laptop. How can I fixed it? It never happened before.