My MacBook Pro 15 will not power on. How do I fix it?

Hi,

If your Mac doesn't turn on - Apple Support

This normally help me.

1. Disconnect from power.
2. Remove back cover
3. Remove battery connector
4. Power the laptop for 30seconds without battery power or AC
5. Now plug in the AC adapter and connect it to the power then switch it on.
6. Don't forget to Press CMD + P + R when powering on
7. Once it powers on reconnect the battery & do the necessary to get it back to normal.
8. NB Always disconnect the device from AC when the battery is full.