How to get PowerShell you pass a CTRL+ALT+DEL command to get a change password prompt
If that is not possible then looking at how we can create a GUI popup box
$newPassword = (Read-Host -Prompt "Provide New Password" -AsSecureString);
Set-ADAccountPassword -Identity Bobby -NewPassword $newPassword -Reset
add-type -AssemblyName microsoft.VisualBasic
add-type -AssemblyName System.Windows.Forms
[System.Windows.Forms.SendKeys]::SendWait("^%{DELETE}")