Download Putty from a secure and trusted source. Once downloaded, place somewhere simple such as the C: and create a shortcut on the desktop or start menu.
Run the shortcut and set the connection type to Serial. Select your serial line (default is COM1) and leave the speed at 9600. Should you need to change the connection details, select Serial on the left navigation panel and match the following details;
Serial Line COM#
Speed (baud) 9600
Data bits 8
Stop bits 1
Flow control None
Click OK and the console window should then open. If the device is not powered on, then flick the power button. As soon as Putty initiates a connection, text should appear on the screen.