How to recognise corrupted EFI chip?
I've got MacBook Pro 15" 2012 i7 - I find out someone tried to solder EFI chip and now I don't know if its just that chip still faulty or firmware corrupted or..... just Macbook is Dead :(
- it is charging as usual
- when pressed power button just fans spin for second
- "white light" on for a second
- display is black
Is this a good question?