• Press Win+R and type the following command in the Run box and Click OK.
• Scroll down the list of services to find the MySQL service. Right-click that entry then left-clicks Stop.
• Launch a Text Editor
  • Click on the menu and search for Notepad.
  • Alternatively, press Ctrl + Alt + N to open Notepad.

Create a New Text File with the Password Command

• Enter the following command to the text editor:

ALTER USER 'root'@'localhost' IDENTIFIED BY 'NewPassword';

• Use the File > Save As menu to save the file to the root of your hard drive (C:\ ). Choose a filename that makes sense, such as mysql-init.txt.
• Consequently, the localhost command will make the password change on your local system. If you’re trying to change the password on a system over the network, substitute the hostname for localhost.

Open a Command Prompt

• Press Ctrl+Shift+Esc
• Then, click on the File menu > Run new task
• Type cmd.exe, and check the box to run as administrator
• Click OK.

Restart the MySQL Server with Your New Config File

• Navigate to the MySQL directory using the command prompt:

cd "C:\Program Files\MySQL\MySQL Server 8.0\bin"

Accordingly, the command line will show that you’re working in this folder.

• Enter the following:

mysqld --init-file=C:\\mysql-init.txt

Clean up

Now, you can log into your MySQL server as root using the new password.

• Double-check to make sure it works. If you have unique configuration options (such as launching MySQL with a -defaults-file option), go ahead and do so.
• Once MySQL launches, and you’ve confirmed the password change, delete the C:\myswl-init.txt file.

At this stage, you have successfully changed MySQL root password.