4 / 5 MacBooks Barely Start || 1 MacBook Pro Spacebar doesn't work... HALP

[rmbrown09]

MacBooks: 4 / 5 (In the pic you see some powerbooks too) will start for a couple seconds, and then shut off, the longer you leave them, the longer they stay on.

Battery in or out does not matter. Same thing.
Reinstalled Leopard still same thing. Pram reset same thing. We probably won't spend the money to fix these and will throw them out, unless I am missing something? any tips?

MacBook Pro

Space bar doesn't work, unless you do spotlight, or hold shift.......
huh??

least our other 9 work 🙂

 

[Hellhammer]

http://guides.macrumors.com/Mac_doesn't_boot

 

[clindner]

Any machine that runs for a short period of time then shuts off could have a problem with the cooling fan or heat sink.