HELPROOM ANSWER There is a driver available for your printer, Harry. Canon also has a Windows 7 product page for your printer. Choose Windows 7 as the operating system and English as the language.
To check your printer is set up correctly, click Start, Devices and Printers. If your printer is listed, right-click it and select ‘Set as default printer’. If it isn’t listed, change the USB cable.
As a 10-year-old printer, it’s had a very good innings. We were pleasantly surprised to find Canon still provides updated drivers. However, it’s unlikely that Canon will offer direct support for the i865.