If you are stuck and want to resolve HP OfficeJet Pro 6978 not printing color. And to fix such issues, you are supposed to follow and apply a few important steps and instructions. You can go through the steps:  First of all, you are supposed to open device and printers  Now, you can simply click on the start button  And then, you should go to the start button  Now, you should click on the devices and printers  Now, you must right-click the printers that you wish to use  And then click on printing preferences  Now, you must click on ok  And then, under the printer option as well, you must click on ok Follow and apply a few important steps and instructions to resolve and troubleshoot all your problems. Go through the steps to resolve your issues now.