Mac book pro stuck on reboot page for 4 hours

"Mac book pro stuck on reboot page for 4 hours: My macbook has been on the reboot page for 4 hours - how to I fix this?"

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Getting Back into Mac Login Screen:

So, what do you see on your screen? Have you been able to enter the password of your Mac?

1. Restart with the Power Button:

If this is stuck after a restart, then power this off(by holding your finger down on the button, and then see if it gets you anywhere from there.

2. Unplug All External Devices:

Power off the Mac, and then unplug all external devices. Boot up once more

3. Run First Aid in Recovery Mode:

Boot in Recovery Mode, and then click Disk Utility from the top menu. Select each partition, and then click First Aid.

4. Boot in Safe Mode:

If this does not work, then do the same boot your Mac in Safe Mode.

5. Reinstall the macOS:

If that does not work, then try reinstalling the macOS.

6. Once Back In:

Create a Time Machine Backup for Recovery Reasons:

Once back in, I would recommend that you create a Time Machine Backup of your Mac to an external Hard Drive. That way, you can have something to restore it from, should anything go wrong after the install.