Summary: This printer has been inconsistent since I bought it. I've wasted hours trying to get it to work. It works and then it doesn't for no obvious reason. I uninstall it and then re-install. I'm so frustrated! I've never even tried Wi-Fi. Right now I'm having a problem which is that my computer says the top cover of the printer is open but it's not. This a new problem. I don't know what to do. I just bought new ink for it because it was working last week.
Summary: The wifi has never worked for this printer. Contacted HP, LinkSys, Dell, Apple. Its better to buy a regular printer and a wireless adapter than to buy this printer. Wish I had more luck with it.
Summary: I like HP products. I have the hP Photosmart 7150 and it is a workhorse. I have had nothing but trouble with the teh Deskjet 6840. It is supposed to be wirelessly available. Not. I have it wired directly and it constantly loses communication with my computer, which I can't figure out. I waste more paper because it stops in the middle of everything I try to print. I try unplugging, rebooting, nothing works.