powershell for rename server name

Rename server name if server has not yet joined AD

$Hostname = "newname"

$username = "Administrator"

$Password = "xxxxxxxx"

$pwd = $Password | ConvertTo-SecureString -asPlainText -Force

$credential = New-Object System.Management.Automation.PSCredential($UserName,$pwd)

Rename-Computer -NewName $Hostname -LocalCredential $credential -Restart

Rename server name if server has already joined AD

$Hostname = "newname"

$username = "domain\admin"

$Password = "xxxxxxxx"

$pwd = $Password | ConvertTo-SecureString -asPlainText -Force

$credential = New-Object System.Management.Automation.PSCredential($UserName,$pwd)

Rename-Computer -NewName $Hostname -DomainCredential $credential –Restart