mac osx 10.4 not found

[8027]

first mac book got from my cousin's gfriend had 10.4 originally but she had leopard disks she gave me i poped the disk in to do fresh install during the install power failed restarted it tried it again it says cant upgrade to 10.5 cause 10.4 could not be found on the disk and i dont have 10.4 disk what do i do now ?

[Sam]

Pop the disk in to the Mac, and then turn the power on.  As you are booting it up hold down the ALT/option key (in between the Ctrl and apple/command key) and a disc should appear on screen, this will allow you to boot from the disc

[8027]

done that already boots up than shows the same message reformatted did everything same error

[Sam]

Are you absolutely sure that you are doing a clean install (by changing the settings via a button in the bottom left corner) rather than an attempted upgrade?

That one caught me out a couple of times.

[Mike K]

Sounds like you are doing the "upgrade install", do like Sam says and use the "clean install" option.