hp print and scan doctor shows old ip address

Nine troubleshooter programs so far state there is a problem but none offer correction or a method to correct it. I find no method so far to directly access the IP address to change it back to its original proper IP address to my router. All other devices previously connected wirelessly to the router have not changed and maintain full connectivity, except to the printer. I read where I can force its IP address to change by connecting to it directly by USB, but I lost that page/procedure and cannot find it again. I have reentered router information, and reset printer to factory defaults many times now, but nothing changes. I always turn off antivirus before any procedure to reconnect. One type of test report states it is connected with no problems, while others including through printer controls/print queue/printer manager/Control Panel printer management state it is cot connected or not properly connected/installed. It can see my router, and connects just enough to state it is connected and installed but does not have 'full functionality', when actually it has none. Uninstalling, reinstalling, cycling off and on of both printer and router, un- and re- plugging AC power, as exactly per procedures, changes nothing, the same incorrect IP address persists. The new IP address is known to appear when there are problems, and begins .XX. There was no event or change of anything that might have initiated this change. The USB connection states the printer is installed properly and all works, but the wireless connection has the continued problems. All transceiver tests of the printer are good, both channels, no problems. I must take my laptop to it and connect by USB to print, but none of the other devices in the house (computers, phones) can print either directly by wireless nor through the wireless router, and so far none have attempted to be connected by USB except my laptop.

About two weeks ago, my HP Photosmart D110a printer suddenly changed its IP address, so it no longer connects to my wireless router.

Hp print and scan doctor shows old ip address