macbook 820-3462a turn on and off

syslan

Member
hi. I have this macbook retina 2012. the problem is that it restarts when the apple logo is loading. I disconnected everything on the mainboard and it still reboots. Before this, the macbook would shut down because it had the tunderbold port shorted (bent the pins).
the Hard drive does not recognize it either.
 
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