There is a small utility from Microsoft that was part of the Windows 2000 resource kit,
It will run on all versions of Windows including 8 and Windows 10. Best of all, it's free!
Running in the System tray allows you change the default printer by just right clicking
Just unzip defptr.zip to your desktop or any folder on your Computer and double click on Defptr
To change your default printer, right click on the printer icon in the System Tray and select the printer you want set as the default.