Black screen after RAM replacement
I upgraded my RAM to 16Gb a week ago.
Now, my Mac can boot but nothing appears on the screen and there is no chime. Even if I put back the first 4Gb of RAM, the problem stays.
I connected it to an external monitor and there was no image.
Therefore, I think about a Mother Board problem.
I went to a Genius Bar where they said me that the replacement of Motherboard costs 500€. This is too expensive for me.
Do you know how can I repair this ?
PS : I hope you'll forgive my bad english :(