I'm patching hundreds of Windows 2008 R2 servers and I'd like a PowerShell script to scan the services of each server before and after patching and highlight any differences between the two. Any help would be greatly appreciated. 

If you're asking someone to write a script for you, you're not asking in the right place. This forum is for scripting questions, not script requests.

You can search the repository for examples:

https://gallery.technet.microsoft.com/scriptcenter

The script request page is here:

https://gallery.technet.microsoft.com/scriptcenter/site/requests

Hi,

Take a look at these:

http://ss64.com/ps/get-service.html

http://ss64.com/ps/compare-object.html