In order to start, please follow the official web page link in order to download Printer drivers.
Download page: http://www.starmicronics.com/support/default.aspx?printercode=tsp100
Select a model that you have
Select the latest version of the driver
Unpack downloaded archive and double-click on Autorun file
Press Installation
Select Typical Installation
Once installation completed, press Finish
Open up Control Panel > Devices and Printer
Right mouse click on installed printer > Printer Properties
Go to Advanced
Select Paper Size: 72mm x Receipt and press OK
Back on Printer Properties → select Device Settings tab → make sure 72mm x Receipt layout is selected and press OK:
Click on OK at the bottom, login to POS, and try to print any receipt.