My MacBook doesn't start anymore
Exclude display problems
Maybe my monitor is the cause of the problem. I want to exclude that first, but how do I find out? Simple. I press the on/off button and ask myself the following questions:
- Do I hear a start sound?
- Do I hear a fan or hard drive?
- Do I see the shutter LED light up? If your MacBook has one, of course.
- Does the Caps Lock key on the keyboard light up when I press it? Is the answer to these questions yes? Nice, that means I have power. That does mean that the source of the problem is indeed the screen.
Problems with power supply
A screen problem is now excluded. Unfortunately, my MacBook still doesn't start. I try the following:
- Check the socket. It may sound obvious, but I check that MacBook is plugged into the wall socket by checking if the cable and adapter are properly connected. I connect my table lamp to the same socket to check if it works. The lamp is working.
- Try another adapter. The socket seems to work. I happen to have another adapter and power cord. I connect the other power cord and adapter to my MacBook. I wait a quarter of an hour. This way, the adapter gets enough chance to charge the battery. Unfortunately, still no power.
- Disconnect accessories. There are still some accessories connected to my MacBook. I disconnect them. Perhaps they're the problem.
- Press and hold the power button for 10 seconds. I then press the power button again to see if MacBook starts up now.
SMC is responsible for standard functions like pressing the power button, response when opening and closing the screen, battery management, etc. Before I reset SMC, I check whether or not I can remove my battery. My battery is not removable
- I turn off MacBook.
- I press the Shift + Control + Option (left) and the power button simultaneously. I hold down these buttons and the on/off button for 10 seconds. On a MacBook Pro with Touch ID, the Touch ID button acts as an on/off button.
- I release all keys.
- I press the power button again to turn on my MacBook.
My battery is removable
- I turn off MacBook.
- I remove the battery.
- I hold down the on/off button for 5 seconds.
- I put the battery back.
- I press the power button again to turn on MacBook.
Remove or reinstall memory
Yes! The problem has been resolved and my MacBook is restarting. As a last step, I could still check if I recently installed memory or a drive on my MacBook. If so, did I do that correctly? If possible, install the original memory or original drive to see if the problem persists.