I plugged in my acer 24" monitor into my 13" laptop then plugged in a bamboo wacom , turned on the laptop and had to leave . I put the lap to sleep came back a lot later and found the screen open to the screen saver . I put the laptop back to sleep and came back later . I hit the key board key and nothing happened . The screen stayed black . I got out my leopard missing manual and started a search . While I was looking I held down the start button and my problem was solved . My question is this . Both the monitor and wacom have been used before together , this is not the first time . What happened . I never had this happen while using these two items before . There was some cable company working in the neighbor hood . Could they have caused the black screen ?