|Hi Jack, adding to OtheHill's post.|
Never disconnect/connect parallel or serial cables with the PC and Device powered on.
You can do this with USB cables, but when disconnecting, should first use the 'remove device' facility. Sometimes this does not work. When this happens, I leave the device connected until I have powered off 'just in case'.
On Control Panel, under 'Printers and Faxes' it shows which printers are currently installed, plus options to add a printer and trouble shoot. I would remove any printers no longer used including their driver(s).
With dot matrix printers, often they needed their own drivers to cover any special features they had. However they could emulate more standard printers, such as the IBM Graphics or Epson MX/FX. You should check the printer manual asto how to find out if this is the case.
Never connect s a parallel device to a serial port, and vice versa, as the voltages differ and something will blow.
Good Luck - Keep us posted.