My Mac powers off during startup
When I press the power button, my computer has one of the following behavior () :
- nothing happens (rare)
- I can hear the startup sound but the process is stopping at various stages from seconds until after I enter my password (the most frequent)
- the startup process is achieved until I can normally use my computer (rare but after many attempts, hopefully, I can reach this point but it can last hours...)
It seems that I can start my computer rather with power adapter than only with battery but it si not very clear. I changed the battery and the behavior did not change.
I thought it could be a magsafe internal card problem but before doing anything, I preferred to get an iFixit advice.
Is this a good question?