I changed my router and I cannot connect to wifi.

[AY39]

I have tried following HP Smart instructions but nothing works.  I have been trying for 3 hours.  Having removed the printer and tried to download drivers the drivers is unavailable.   Thank you

[Dragon-Fur]

@AY39 

Welcome to the HP Community.

After three hours of research, you likely know more about this subject than many people ever discover.

Add the following check points - hopefully something will help...

First off,

If you are convinced everything is connected correctly,

If you have not done so,

Make sure Wi-Fi Direct is switched (toggled) to OFF on the printer.  If you are not using it, you want this type of "direct" Wireless connection shut (and left) OFF.

Next,

Restart everything on the network, including the router, computer, and printer.

NOTE

If you believe there are overlapping connections or that a device might be interfering,

During the attempt to diagnose and resolve the errors,

Switch OFF extra network connections, for example phones, game boxes, and the like.

The Doctor

If you want to first try a "semi-automatic" solution,

Install and Run the "Offline" version of the Print and Scan Doctor.

Doing so might actually fix the issue, in fact.

Takes a few minutes - checks the printer connection and might reload the printer software.

Important NOTE

The Doctor cannot fix an incorrect bandwidth / frequency connection.

The printer must be able to connect to the correct SSID named network for the 2.4GHz frequency.

See the "Considerations" example later in this message.

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Resource – Choose the right doctor for the job

Open Website

HP Print and Scan Doctor for Windows

Click the green Download Now option / box

Wait!

If the problem / issue is one or more of

• Printer is Offline
• Cannot print in Color
• Duplex printing has disappeared
• Installation continues to fail

Try this “Offline” Doctor version:

https://ftp.hp.com/pub/printers/hppsdr/patches/HPPSdr.exe

After the doctor runs, Restart the computer and log in.

Doctor will finish any necessary setups.

NOTES – The “Offline” doctor

As a result of repairing issues,

Offline / Color check / Duplex check version of the Doctor may replace the printer or add a “(Copy 1)” version of the driver in Devices and Printers.

If there are two printers in Devices and Printers,

If one of them does not work,

Try sending your job to the “Copy 1” named printer.

Later

If you want / need to rename the “Copy 1” printer:

Open Control Panel > icon view > Devices and Printers

Right-Click on the printer name > Printer Properties > Tab General >

In the top box, Edit the name of the printer (For example, remove the part that says “Copy 1”)

Click Apply / OK to save change

NOTE:  The name change may take a bit of time (a few minutes), else Restart the computer and log in.

==================================================================

Manually check / check / resolve...

Next...

Open

User Guide

Set the printer network settings back to the Defaults.

See Page 69

Next,

Prepare to connect the printer to your network.

Read - starting on Page 62

Note the requirement that the printer connect to an named SSID network on the 2.4GHz frequency / band.

Considerations - Dual Network

SSID_Dual_Band_Example_10

Printer Software

Loading printer software...

The following might be helpful:

HP Deskjet 2652 & 2655: Download Install Software & Connect using HP Auto Wireless

What else?

The Full Feature Software / full driver printer software installation package for your printer

HP DeskJet / Ink Advantage 2600/2675/2676/2677/2678 Print and Scan Driver and Accessories 

Details / How-to / Examples

>>> Check / Install the Full Feature Software / full driver printer software

The full driver provides the foundation on which other programs and printing software depend.

Preparation - Install Full Driver Printer Software

If you have not done so,

In addition to the HP Smart application,

Install the Full Feature Software / full driver printer software for the printer.

HP Smart and other print software / applications benefit from having the full driver installed.

Make sure your VPN is switched Off when installing software.

Printer Software Check - Is the printer software installed?

Notes

When the full driver printer software is installed,

Find the printer software listed in Control Panel > icon view > Programs and Features.

The installation of the full printer software adds two shortcut icons to the Desktop.

The Printer Assistant is named for the printer and provides access to Print , Scan , and Tools

HP Scan is named for itself and provides a direct call to the HP Scan software.

Programs_and_Features_Printer_Desktop_Icons_5

Next...

Printer software installed >> Software is out of date or not working?

NOTE:  If the printer software shows installed but is not working as expected,

Uninstall the printer software from Control Panel > icon view > Programs and Features

Restart the computer and log in

What if?

If software will not uninstall, appears to be removed and is “still hanging around” after you uninstall / Restart...

Microsoft:  Fix problems that block programs from being installed or removed

OR

Revo Uninstaller (Free version)

then

Restart the computer and log in

Reminder:  If using USB, disconnect the USB printer cable between the printer and the computer before installing software.  (Re)Connect the USB cable when instructed to do so near the end of the installation procedure.

Install a fresh copy of the Full Feature Software / Full Driver printer software

Restart the computer and log in

===============================================================

Basic Instructions - Install the Full Feature Software / Full Driver printer software

• If using VPN, shut it off to install software
• Download and Save the Full Feature Software installation package or the Easy Start Software
• Open File Explorer
• Navigate to the folder in which you saved the installation file  (likely Downloads)
• Reminder:  If using USB cable between printer and computer, disconnect the cable before installing software.
• Right-Click on the installation package and “Run as Administrator”
• If using Easy Start > When asked, opt for "Full Driver" (exact wording might vary).
• If using Easy Start > Skip any extra software / offers you do not want (wording varies).
• After the software is installed, Restart the computer and log in

NOTES

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Preparation > Check / enable the printer as the “Default Printer”

Settings > Devices > Printers and scanners

UNCHECK (clear box) Let Windows manage my default printer

Select (Left-Click) your printer from the list of printers > Manage > Set as Default

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References / Resources

Good information here:  Wireless Center

Including (not limited to):

Wireless Center > Section: Common Questions > Topic Connection Issues

Section: Improve Wireless communication by setting a manual (static) IP address

 and

Wireless Center > Section: Common Questions > Topic Connection Issues

Section: Improve Wireless communication by setting a manual (static) IP address

HP Printer Support Home Page - References and Resources – Learn about your Printer  - Solve Problems

 “Things that are your printer”

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, Manuals > User Guides, Product Information (Specifications), more

When the website support page opens, Select (as available) a Category > Topic > Subtopic

HP DeskJet 2620 All-in-One Printer 

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