disconnect printer from computer

[Sammy2017]

I have an HP deskjet 4155e and a windows 10 Toshiba computer.  Both were working fine when all of a sudden my printer wouldn't print anything.  My hp app shows its offline which is odd because my computer works fine.  Both were on same network. Want to delete printer and readd it back and see if it will go back online but not sure how to do it.  Any suggestions.

[Meghana_10]

Hello @ambasadords, Welcome to the HP Support Community. 

Thanks for reaching out about your query regarding the HP Deskjet 4155e printer. 

We appreciate the opportunity to assist you and are glad we could help work toward a resolution. We hope our support has been valuable.

To help us get started on resolving your issue, could you please try a few troubleshooting steps provided below so that I can assist you further?

Use the Cancel and Wireless buttons to restore Wi-Fi setup mode.

1. Press the Cancel button to ready the printer. 

2. Press and hold the Wireless button and cancel button at the same time for five seconds until the Power button starts blinking. 

Note:  Your control panel might look different than the following example, but the steps are the same.

3. Wait until the blue Wireless button light blinks continuously.

4. Within two hours, return to the app or software to find and add your printer and complete the setup.

Take care and have an amazing day!