Chosen Solution
I just replaced the motherboard in my Mid 2009 13” unibody macbook pro. It all seemed to go very well, then I turned it on. The machine powers up but all i get is a white screen. No boot. Any ideas on what may be the cause?
Other than review your connections I would say the logic board you got is bad. You’ll need to return it to get either a replacement or your money back.
