== Means no boot system found ==
'''Either your HD is trashed, or corrupt.''' ''You can boot from your install CD/DVD and run Tools->Disk Utility->Disk First Aid Tab->Repair Disk.'' (Do not do an install).
If you don't have/can't find your install disk you could try booting into single user mode and running a utility from the command line.
''' '' Startup in single user mode ( hold down command-s after the boot boing ) you'll see white text on a black screen. When it stops loading/scrolling '' type ''/sbin/fsck'' press return.
# /sbin/fsck <- run this until until it is clean''' (no longer says "System modified) it will say volume appears okay.
# # type ''reboot'' press return
'''If the above fails ''boot in target disk'' ''' (hold down the T key until you see the firewire symbol ''{looks like a stylized Y}''
* You can now use a dual USB or Firewire cable to connect your laptop to another computer, and backup your data.
* '''Reformat and reinstall the OS -''' if that fails your HD is cooked.
Good Luck.
N.