I'm sorry about the issue. What's the model of your new modem?
Is the Internet currently working on the computer with the new modem?
Have you tried the Wi-Fi Setup Wizard option on the printer's screen yet? Is there any error or message?
Please reply at the box below. Thank you,
Please check at the back / bottom of your new wireless modem for the model of it.
Please type at the box below, then click on the Send button below to communicate with me, so I can help. Thank you,