How to install .MSI using PowerShell

Question

I am very new to PowerShell and have some difficulty with understanding.
I want to install an .MSI inside PowerShell script.
Can please explain me how to do that or provide me beginners level tutorial.

$wiObject = New-Object -ComObject WindowsInstaller.Installer ????? 

Answer 1

Why get so fancy about it? Just invoke the .msi file:

& <path>\filename.msi 

or

Start-Process <path>\filename.msi 

Edit: Full list of Start-Process parameters

https://ss64.com/ps/start-process.html