Instructions
NOTE: If you're looking to restore certain files, you can follow our solution on recovering individual files using Time Machine.
- Shut down your Mac.
 - Once your Mac has shut down completely, press the power button to turn it on. While it's starting up, press and hold the command+R keyboard combination.
 - Choose Restore From Time Machine Backup. Then, click Continue.
 - Click Continue.
 - If you have an encryption password set up on your backup disk, choose your backup and click Unlock. Otherwise, skip to Step 7.
 - Type your backup disk encryption password and click Unlock.
 - Choose your backup disk and click Continue.
 - From the list of backups, pick the one that you wish to restore. Then, click Continue.
 - If your Mac is encrypted, choose your destination and click Unlock. Otherwise, skip to Step 11.
 - Type your admin credentials and click Unlock.
 - Pick a destination disk and click Restore.
 - Read the warning. If you agree, click Erase Disk.
 
Outcome
You have restored your Mac from a Time Machine backup.