Hp c7280 all-in-one printer will not shut off

HP C7280 REPLACED ALL CARTRIDGES - STILL WILL NOT PRINT

This means there's a failure in your printer's pump motor.
If you are still under warranty, contact HP's Customer Service here : http://welcome.hp.com/country/us/en/wwcontact_us.html
If not, you can try your local computer store for a check-up but they'll probably suggest a new printer.
Hope this helped.
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Go to printer folder ( printer and faxes ) right click on the printer and choose " USE PRINTER ONLINE"

Try Using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English).

If any more problem encounter,post or thumbs back.

Please install new driver and get it downloaded here : www.siliconguide.com > Drivers > Printer > HP
www.opendrivers.com/.../hp-free-driver-download.html
www.brothersoft.com/downloads/hp-printer-driver.html
Jay nmbghkl

Hi,
Visit to the given link and download the manual or user guide. The complete procedure for scanning is mentioned therein...
http://www.retrevo.com/support/HP-C7280-Multifunction-Printers-manual/id/3837dj879/t/2/
.....
http://www.generalmanual.com/Printers/HP-Photosmart-C7280-All-in-One-Printer.htm
Hope this has helped you... Please rate the answer... Thanks...

Try www.hp.com/us or your country code.

Just unplug it, wait a few seconds, then plug it in again. That should fix the problem.
I had the same problem - my Photosmart C7280 AIO displayed "Shutting Down" message all night, and would not respond to any buttons on the control panel, even holding down the Power On/Off button got no response. I was worried about a couple of ink cartridges that it had warned were low before I tried to shut down, so I replaced those.
After looking in the manual and online for troubleshooting help from HP and others, and finding nothing but a suggestion to unplug it (not on an HP site), I finally did unplug it, after first disconnecting the USB cable to prevent any trouble due to interaction with my Mac. Then I aited about 30 seconds, plugged it back in, turned it on, and it started up fine, with no apparent problem.

You could try the recommendations from HP support for your model: (recommend cleaning feed rollers)

HP Photosmart C7280 Prints Crooked

Try reinstalling the software, first remove the previous installation Then confirm all is working through USB cable, the worry about wireless Inkypete