
I don't have Win 7, so hopefully you find the HP Printer Assistant. You may need to ENABLE Scan to Computer using the HP Printer Assistant, which is part of the printer's software. Let my know if any success (or not) and good luck. I found this link for Windows 7 (if not 64 bit, change it). Then at the top of the page click uninstall. In the window that opens, left click once to highlight any relating to the 5540 printer. Plug the power cord back into the wall outlet. Turn on if needed. Any results?Ģ) If no improvement lets do a complete uninstall by using this REVO uninstaller (free) program (next link). Unplug the power cord from the wall outlet.

With the printer turned on, disconnect the power cord from the rear of the printer. Wait until the printer is idle and silent before you continue. Turn the printer on, if it is not already on. If you would like to try software download again, let's do a Printer Reset, uninstall, and then download software. The software download that you have tried involves specific steps. I just realized your description states " due to imaginary paper jam first, and to an imaginary empty paper tray." There are other specific HP solutions for that, if you continue unable to solve the problem.

Business PCs, Workstations and Point of Sale Systems.Printer Wireless, Networking & Internet.DesignJet, Large Format Printers & Digital Press.Printing Errors or Lights & Stuck Print Jobs.

