Go to control panel, and open Devices and Printers FIX: HP Universal Printing PCL 6 driver printing Grayscale only 1 Right click on the Printer that uses "HP Universal Printing driver" select Printer Properties. FIX: HP Universal Printing PCL 6 driver printing Grayscale only 2 In properties go to the Device Settings tab. FIX: HP Universal Printing PCL 6 driver printing Grayscale only 3 Slide the bar to go to the last of the list. Find entry called Device type FIX: HP Universal Printing PCL 6 driver printing Grayscale only 4 Ensure the Device Type is set as Color rather than Auto Detect. confirm any changes by pressing OK.