Hi guys! The other morning 2009 July MPB failed to boot. When I pressed the power button, I got the usual "chime" and grey Apple screen with the spinning wheel and a progress bar. Then, it turned itself off. Then I ran the disk utility from the Snow leopard install disk and with "disk Check" and "Disk repair" I get the Invalid Node Structure" error and the message that it can not be repaired . The MBP was all time on the desk and never dropped or anything. So big question now is - can it be fixed? it is just a file issue or is it a hardware issue?? The HD is a 500GB 7200rpm Seagate drive that the MBP came with. I do not have any Windows partitions or other OS running on it.