I'm hoping someone out there can help. Trying to install osx10,5,6 on my samsung NC10. All worked perfectly until i tried to upgrade to 10.5.8, then the updater crashed after 80%. upon restart the computer boots, but the screen res is wrong, the keyboard/mouse dont function, and there is a prompt about bluetooth mouse activation. cant get any further than this, as the keyboard and trackpad dont work.

Any ideas as to how i can force it to reset - is there a last known working function i can use, or a way to start again from scratch? I've tried booting up with the os10.5.6 disk but dont get an option to boot from there.

any help greatly appreciated