Answer to: How do I clean the ink"jets" on HP Office jet 7310 All-In-One?Most all HP printers have an internal menu for cleaning and aligning print heads. You will need to access the tools menu usually found under maintenance on the screen. From here you will be given the option to clean print head. Sometimes you have to run the "clean print head" option several times to correct print quality. If this does not work you can remove ink cartridge, and clean using soapy water on a soft cloth. This usually does not work, but worth a try. I have seen it work. If print quality is still no good replace cartridge.
Answer to: Will not turn on after plugging into outlet in carNot sure about the Zune, but I have had a cellphone that done this repeatedly. The phone would not come on after using car charger. I had to remove the battery, and put it back in the before phone would come back on.
Answer to: Paper prints off but it is blankUnfortunately, the steps you have already taken (1. replace ink cartridges 2. replace print head ) are the only economical fixes for this problem. The print heads on Kodak printers go bad often. These printers are advertised as economical to operate, but they don't tell you about the print head problems.