The Win32_Product class can be used to list the installed software (what shows in Control panel Programmes and Featurs) on a machine. it can also be used to uninstall software.
We can see the installed software
Get-WmiObject -Class Win32_Product
we can filter down to the results we need
Get-WmiObject -Class Win32_Product -Filter “Name LIKE ‘%TechNet%'”
The specific version to uninstall is selected
$t = Get-WmiObject -Class Win32_Product -Filter “Name = ‘TechNet Library – English DVD (March 2010)'”
and then we call the uninstall method
A return code of zero indicates a successful uninstall. Anything else and we have problems.
This method doesn’t delete items from the start menu – which is a job for another time