Hello 911firedriver, and welcome to the HP Forums, I hope you enjoy your experience!
I see you are looking at adjusting your print settings. I would like to help!
Have you been changing the settings in the print window when you print? If so, the changes should be made in the printer properties themselves. I would recommend going to Devices and Printers and right click on your printer. Select printing preferences, and select the advanced tab. In there, you can select Print in Grayscale and press apply, then press OK.
Also, has any updates or changes to the software occured? Has the computer always been Windows 8, or recently upgraded?
Good luck and please let me know the results of your troubleshooting steps. Thank you for posting on the HP Forums!