HP won't print from the network

[acp2017]

I have changed internet provider in our house so had to change the printer IP on everybody's computer. I was sucessful with all the Apple products but the windows ones have been a challenge. 

My son Dell Notebook is the last of my fight... It has been two days that I have followed every instruction provided by the HP diagnostic and site and I can only print the Page test from direct print but not the network even though all is okay as far as IP, passcodes etc..  I have tried all sorts.

Please can somebody help , it is driving me insane!!!  

[sabretooth04 · Accepted solution]

Make sure Wireless Direct is disabled in the printer since you have a router.

Replacing/changing your wireless router, try here.  

http://www8.hp.com/us/en/campaigns/wireless-printing-center/reconfiguring-system-help3.html

* Reset your printer back to Network Defaults.  Then run the Wireless Setup Wizard to connect.  Both can be accessed from the front panel or computer.  If no front panel for configuration, you must use your Printer USB cable to connect.  You can also try the WPS method if your router/printer supports this only if the Wizard or Printer USB cable is not available.  Read your User Guide for info.
* Set router to a fixed wireless channel like 1, 6 or 11, never ‘auto’.  Try channel 1 first then the others one at a time.  
* Make sure printer and router are at least 5 feet apart.  
* The router must have the 2.4G SSID band enabled with a different name than your 5.0G SSID band in your router.  
* Make sure IPv6 is disabled in the printer.

Make and model of modem and router?

However if you have a Gateway (modem+router) device, all Gateway devices are terrible for wireless connectivity.   If this does not work, suggest you think about putting that gateway device in full bridge mode and install your own high quality router that YOU have full control over.