How do I set the HP Deskjet 1010 as the default printer on Windows?
Go to your printer settings through the Control Panel and make sure your printer has a check mark in the circle next to it. If it is not selected as the default printer, right-click the printer icon and choose 'Set as Default Printer' from the menu. The navigation path differs slightly depending on your Windows version (Windows XP, Vista, 7, or 8). (Page 2)
From the official HP Deskjet 1010 Printer manual, page 2
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