I did see you reinstalled your software) but please continue
It is important that you have that icon by the clock. Power off the printer by pressing the power button on the printer.
your printer software through Add/Remove Programs within the control panel. Please restart the Pc after un-install
is complete. Create
a folder on your hard drive and name it, "HP DeskJet
840C". Go to this link listed below & download the printer driver software listed. When you save to disk you can choose where you want to save. Pick the folder you created. Save inside this folder. The HP driver (Will most likely be updated software). I promise, you will have a icon down by your clock when finished.
Follow the instruction in your manual for setup & installation.
If you using Outlook Express & you want to print or send through your printer the page should be set as 8.5x11". Orientation should be set to Portrait, unless you set this for A4.
Lastly, please turn off your anti-virus software during install & re-install. Just in case you come back to this thread!