I've had my Dell Inspiron laptop now since October last year, and there's a problem with it where it will just turn off if I move it. If I tilt the screen forwards or backwards to a better angle, the whole machine will just instantly shut off, which is far from ideal. It also occurs if I was to pick it up and move it to another part of my desk, or it will turn off while I've put it to sleep to move it. It only happens on battery power though, not mains. It's been sent away to Knowhow to be repaired, but they couldn't find anything wrong with it. Anyone know why it does this?