In this short and sweet blog post, I will show you how to set the local Administrator password on a Windows Server or client using PowerShell.
By default, Microsoft PowerShell comes with a built-in module to manage local users and groups.
Below, is the tow line code the will first ask you for a password and the second line will set the password to the local administrator account.
Note: You can change the account name to any account name that exists on the computer.
$pass = Read-Host -Prompt "Set Password" -AsSecureString
Set-LocalUser administrator -Password $pass