If none of these solutions work, it’s possible that your Mac or MacBook has a hardware issue. In this case, it’s best to take it to an Apple Store, Apple Genius Bar, or authorized repair center for further diagnosis and repair.
In conclusion, if your Mac or MacBook won’t turn on, there are several things you can try to fix the problem. These include checking the power outlet, trying to boot in safe mode, resetting NVRAM or PRAM, booting from an external drive, or taking it to an Apple Store or authorized repair center. Remember, don’t panic and try to troubleshoot step by step.