I'm sorry about the issue. Is there any error or message?
Was it working previously? Or is this a new printer or new computer or new modem/router, etc.?
What is the brand/model of your Internet modem/router device?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?
On the printer's screen (not on the computer), go to menu, then go to the option Wireless LAN Setup or WLAN Setup, then what happens when you select / connect to your wireless network name there?
Please reply at the box below. Thank you,