Remove Existing Printers (Windows)

1. Click on the start button

2. Type the word Printers (just start typing without clicking anywhere and it'll find the program that starts with 'Printers'):

3. Open up the "Printers & scanners" app as displayed.

4. Click on any printer that ends with 'on do-prn1'.

5. Select the option that says 'Remove Device':

6. Repeat steps 4-5 for any other printers listed as 'on do-prn1'.