My friends MacBook would not connect to a wireless network, and despite our best efforts we could not troubleshoot this issue, so we tried downloading a Mac OS X 10.5.8 software update on my computer then uploading it to his via usb flash drive (We know it is not a hardware issue because he was able to boot into Windows and the WiFi would work). We installed the update and the computer was in the process of rebooting. During this time we pulled the flash drive out, which seemed to have caused the computer to freeze. We left the computer alone for a while then gave it a hard shut down. We then attempted to boot it up assuming the software update would resume. The computer now will recognize there is a macintosh HD (he has his HD partitioned for windows) but every time we try to boot it up it pauses like it is loading then shuts back down. We have tried using a Mac OS X snow leopard disk to repair the HD but it would not repair. A functional HD at this point is not as important as recovering the information on the HD, the computer was near the end of its life anyways and he was going to get a new one. Any and all suggestions would be appreciated, thank you.