I broke my iBook G4 . (I took it almost all the way apart to replace a cracked screen frame) Does anyone have a suggestion? Cold, it will boot up ok, and work for about 5-10 mintues and then freeze, completely (what was on the screen remains there, but the computer is completely unresponsive--the mouse doesn't even move, etc.) If I force a reboot, it starts booting until it reaches the point where the screen turns from grey to blue and then freezes there. If I reboot again and again it will freeze at that same point. If I let it sit for a while (overnight), it will again boot all the way, only to freeze again after about 5 minutes. It passes the hardware tests (when booted to the hardware tests and in firewire mode it seems to work indefinitely). I thought it might be overheating--that I somehow messed up the contact between the heatsink and the processors, so I reseated the heatsink using fresh thermal compound--but this didn't help. Or should I just give it up and sell it for parts on ebay?