The other day i turned on my laptop only to hear the sound of the machine starting(the welcome tone) but no image. If i leave the computer on it will become very hot, yet still no image. so i tried letting the batter die completely then recharged it. turned it on the following day and it worked fine, when i was done doing my normal operations i closed the lid(as i normally do for later use) and went about my day. came back to it several hours opened the lid only to find the screen would not turn on again. So i tried the same thing last night till today but no screen. any ideas??