@Redlizzy Thank you for posting on the HP Support Community.
Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:
What is the operating system?
When was the last time it worked fine?
Before setting up the printer on your wireless network, gather the network name and password, and turn on your router, printer, and computer.
Gather the following items:
Network name: The network name is the SSID (Service Set Identifier).
Network password: The password might also be called the WEP key or WPA security passphrase.
A computer connected to your wireless network
Internet access: HP recommends broadband Internet access such as cable or DSL for software downloads, using Web Services, and getting printer updates.
Make sure the router and computer are turned on, and that the computer is connected to the same wireless network to which you want to connect the printer. Turn on the printer and place it close to the computer and within range of the router during the setup procedure.
Disconnect any USB or Ethernet cables from the printer.
The Wireless Setup Wizard provides an easy way to set up and manage the wireless connection to your printer.
Turn on the printer, if it is not already turned on.
On the printer control panel, touch the Wireless icon .
The Wireless Summary screen appears.
Touch Settings, and then touch Wireless Setup Wizard.
Follow the instructions on the control panel to connect the printer to your wireless network.
Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.