title: How to install .MSI using PowerShell
body: <p>I am very new to PowerShell and have some difficulty with understanding.<br>
  I want to install an <code>.MSI</code> inside PowerShell script.<br>
  Can please explain me how to do that or provide me beginners level tutorial.   </p>
  
  <pre class="lang-ps prettyprint-override"><code>$wiObject = New-Object -ComObject WindowsInstaller.Installer
  ?????
  </code></pre>