If you want to see which drivers are loaded you can use free “DriverView” by Nirsoft to see all the drivers that are loaded plus a lot of stuff about each driver. My Desktops are currently loading about 150 drivers give or take depending on what programs I am running.

http://www.nirsoft.net/utils/driverview.html

If you want to see what processes and services are loaded you can use Process Explorer by MSFT

http://technet.microsoft.com/en-us/sysinternals/bb896653