ok, recently ive been having a weird a$$ problem with my TiBook. Usually only happens when its unplugged (but has happened once when plugged in) whick may just be coincidence. sometimes when i pick my TiBook up to move it the screen goes black. Now its not the case of it going to sleep or anything because it WONT turn back on when it does this. It just goes black. At first i thought this was maye the battery being loose and my computer turning off. Though i soon realized (from trying to turn it back on) that it is actually still on!! running, like normal (near as i can tell) just the screen wont show anything. I can hear the fans etc still working and i have to hold the power button down to reboot it! ok, so people who know hardware better than me...WTF is up? its veryyy odd. Any thoughts or suggestions on how to fix would be appreciated!