I found the below instructions:
[FONT=Arial,Bold][FONT=Arial,Bold]Wireless Settings Menu method1.
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[/FONT]Press the [FONT=Arial,Bold][FONT=Arial,Bold]Wireless [/FONT][/FONT]button on the printer to display the Wireless menu. If the printer is printing, in an error state,or performing a critical task, wait until the task has been completed or the error cleared before pressing the
[FONT=Arial,Bold][FONT=Arial,Bold]Wireless
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[/FONT]button.
[FONT=Arial,Bold][FONT=Arial,Bold]2.
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[/FONT]Select [FONT=Arial,Bold][FONT=Arial,Bold]Wireless Settings [/FONT][/FONT]from the printer display.
[FONT=Arial,Bold][FONT=Arial,Bold]3.
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[/FONT]Select [FONT=Arial,Bold][FONT=Arial,Bold]WiFi Protected Setup [/FONT][/FONT]from the printer display.
[FONT=Arial,Bold][FONT=Arial,Bold]4.
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[/FONT]If you have a Wi-Fi Protected Setup (WPS) router with a WPS push button, select [FONT=Arial,Bold][FONT=Arial,Bold]Push Button[/FONT][/FONT], and then followthe onscreen instructions. If your router does not have a push button or you are not certain if your router has apush button, select [FONT=Arial,Bold][FONT=Arial,Bold]PIN[/FONT][/FONT], and then follow the onscreen instructions.
[FONT=Arial,Bold][FONT=Arial,Bold]NOTE:
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[/FONT]The product begins a timer for approximately two minutes during which the corresponding button onthe networking device needs to be pressed or the router PIN needs to be entered on the router’s configurationpage.
[FONT=Arial,Bold][FONT=Arial,Bold]Traditional wireless connection (requires router)
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To connect the HP All-in-One to an integrated wireless WLAN 802.11 network, you will need the following:
Connectivity 33
[FONT=Arial,Bold][FONT=Arial,Bold][FONT=Arial,Bold]Connectivity
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A wireless 802.11b/g/n network that includes a wireless router or access point.
[FONT=Arial,Bold][FONT=Arial,Bold]NOTE:
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[/FONT]802.11n will only support 2.4GhzA desktop computer or laptop with either wireless networking support, or a network interface card (NIC). Thecomputer must be connected to the wireless network that you intend to install the HP All-in-One on.Network name (SSID).
WEP key or WPA Passphrase (if needed).
I guess what would help now is to know what make/model your wireless router is. Possibly yours does not have a pin but instead the SSID code that needs to be entered. I am sure we will get you where you need to be in order to print.