Chosen Solution
My 2008 A1278 2.0 MacBook makes no sound when LED light flashes, shows a grey screen 4 seconds after power button is pushed, doesn’t have a caps lock light, and won’t eject a disc. I’m guessing that the logic board isn’t functioning. I would appreciate any other suggestion about what might be wrong.
Run through the routine outlined here and let us know your results: https://support.apple.com/en-us/HT201295
