I have a mac book pro. 4yrs old. when I'm starting it, its not booting up.. no sound.. no display. just the blinker is coming on. plz help.. :(

I have a mac book pro. 4yrs old. when I'm starting it, its not booting up.. no sound.. no display. just the blinker is coming on. plz help..

Ok..
Try Resetting your Mac's PRAM and NVRAM
If that doesn't help, try Resetting the System Management Controller (SMC)
If nothing helped, since you don't hear the startup chord, make an appointment at an Apple Apple Genius Bar or take your Mac to an Apple certified repair provider.
v10.5.6 is an oudated version of Leopard.

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