Anyone know what could have happened to my MacBook Pro?

Devon0318 Said:

"Anyone know what could have happened to my MacBook Pro?: My Mac suddenly just would not turn back on after not using it for a couple days. It keeps trying to turn on but it will repeat the startup chime with either a dimly lit screen or with the Apple logo but it never actually turns on."

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Troubleshooting Power:

A. Please Clarify:

• Is it charging?
• Did you install an update?
• Have you had battery issues?
• Has this Mac been serviced recently?
• What were you working on when this happened?

B. Try a New Charger:

If it is charing from an external device, then use a new charger:

• Power & Cables - Mac Accessories - Apple - Select "Mac Compatibility" on the left
• Find the Right Power Adapter and Cable for your Mac Notebook - Apple Support

C. A Few Links to Refer to Power:

• About Mac Notebook Batteries - Apple Support

• How to Turn your Mac On or Off - Apple Support

• Charge the MacBook Pro Battery - Apple Support

• If your Mac Battery won't Charge - Apple Support

Sounds like it may have suffered some sort of hardware failure. You have tried the things that I would have suggested to try to get it to boot. You can check out If your Mac doesn't turn on - Apple Support and see if that might work for you. If that doesn't work either, then you're most likely going to have to take it to either an Apple store and have them look at it at the Genius Bar or to a certified Apple service center and have them take a look at it to see if there is something they can do or get information on what it is going to cost to get it fixed.

Devon0318 Said:

"Anyone know what could have happened to my MacBook Pro?: My Mac suddenly just would not turn back on after not using it for a couple days. It keeps trying to turn on but it will repeat the startup chime with either a dimly lit screen or with the Apple logo but it never actually turns on."

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External Keyboard:

Use an external keyboard to perform the resets. You might need one of these: USB-C to USB Adapter - Apple

Safe Mode:

Also, boot up in Safe Mode [Hold Down: shift key upon boot. In Safe Mode, login items do not run, and preferences are set aside for a more successful reboot.