Error nr.1045 access denied for user ' root ' @ ' localhost ' (using Passwd:no)

When you uninstall MySQL on Windows, the run fails when you reinstall again, and the following error is reported:

Workaround:

1. Service inside stop MySQL service.

2. Uninstall MySQL and remove the MySQL installation directory.

3. Also delete the MySQL-related files from the following directory

4. Delete the Heky_local_machine related directory in the registration table

Hkey_local_machine\system\controlset001\services\eventlog\application\mysql Directory

Hkey_local_machine\system\controlset002\services\eventlog\application\mysql Directory

Hkey_local_machine\system\currentcontrolset\services\eventlog\application\mysql Directory

Error nr.1045 access denied for user ' root ' @ ' localhost ' (using Passwd:no)