Laptop cannot find wireless printer HP 2540

Trying to connect my Acer laptops to HP Deskjet 2540 All-in-one printer.   Printer is connected to wireless network.
My laptops cannot find the printer. I have tried everything suggested, apart from disabling my firewall which I am reluctant to do as I do not want to have my laptop so vulnerable.
Did not have any problem connecting a Windows 7 laptop to former printer, which was a Lexmark wireless model.
One laptop is using Windows 7, the other Windows 8.1, but both have the same problem.
I am not very technically astute and also I am quite old, so if anyone can help, please keep it simple.

Hi mev2911, and welcome to the HP Forums!
I understand that you are no longer able to get connected to your HP Deskjet 2540 All-in-One Printer on your wireless network. I suggest that you follow the steps in this document for Printer Does Not Maintain Wireless Connection. I suggest that if your computers are not seeing the printer, that you power cycle your network first as this may resolve your issue.
How to power cycle network
Follow these steps to reset your HP printer, your wireless router, and your computer.
1.Press the Power button on the HP printer to turn it off.
2.Disconnect the power cord from the rear of the HP printer.
3.Disconnect the power cord from the wireless router.
4.Turn off the computer.
5.Wait 30 seconds.
6.Reconnect the power cord to the wireless router.
7.Wait 30 seconds, or until the router is fully on and ready.
8.Turn the computer back on.
9.Wait for the computer to reload.
10.Reconnect the power cord to the rear of the HP printer.
11.Turn the printer back on.
I hope this information helps, please let me know how it goes.
Thank you and have a great day!
I worked on behalf of HP.

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Link below for some useful information on getting your printer back on the network........Good Luck!
http://www.hp.com/global/us/en/wireless/reconfiguring-system-help3.html
I worked for HP but my posts and replies are my own....Thank you!
*Say thanks by clicking the *Kudos!* which is on the left*
*Make it easier for other people to find solutions, by marking my answer with (Accept as Solution) if it solves your issue.*

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Say "Thanks" by clicking the Kudos Star in the post that helped you.
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Aritah wrote:
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Laptop cannot find wireless printer HP 2540

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