I've had the same happen to me with the 5320. I love the laptop, but whenever there is a bump, I have to slap it a couple of times before the system starts working again. I opened up the laptop. Did not find anything loose. However If I had to guess, it would be the graphic module that might be the problem. Its connectors are the only ones that I can see that might get disconnected with the jolts, and its around the area that I usually slap or bang on to get the laptop to work again. Last night It did not startup so I did the usuall slapping with no results. Thats when I opened it up. I openedup everything, checked for any cracks, loose wires/connectors, fried parts, etc. but found nothing. put it back together and it still does not turn on. To clarify that, the blue light on the power button comes on, the battery charge indicator and on indicator, but nothing else turns on. With the power off, the media player works and I can listen to music on the cd/dvd player.......the 3 screws below the screen are not important, they just hold metal brackets to stiffen the frame.