How to Repair 15" Mac Book Pro Core 2 Duo 2.16 Ghz That Won't Power On? I'm attempting to revive a non-working 15" Core 2 Duo Mac Book Pro purchased early 2007. The laptop suddenly powered off (or so I was told). Attempting to power on gives only a few signs of life.


Magsafe lite works when power cord plugged in
Hard drive spins up when power button pressed
No chime, no back light, no power button light, no fans
Holding the power button for 5 seconds will spin-down the hard drive
After drive spinds down, hitting power will turn it back on.


Please give me your best suggestions on getting this system booting again.

In attempts to fix, I've reseated the RAM and most internal connections. I'm willing to replace any internal components if economically viable.

Update: a reset of the system mgmt controler brought the fans back online
In the absence of “chime” there are three things to blame: RAM, GPU or Board/CPU. 

I know because I had the same problem throughout the years with different Macs (and even Powerbooks). Try removing some RAM and putting some other modules, also remove the battery as suggested by Philip in the comments. 

Using an external display may help identify screen problems too.

And finally an Apple Store, even if it’s out of warranty, will diagnose the box (sometimes for free, it depends) sometimes for a small fee. Bear in mind they will always go for the brute force route: “you have to replace X,Y,Z”, 1000 u$s. Thanks for Coming, Bye. ;)