My printer won’t work.

[deolinda]

Hi! This is my first time using an HP printer — it’s the Smart Tank 720 Wireless All-in-One. I just got it today and managed to print a couple of things, but then it suddenly froze. Now it doesn’t respond when I press any buttons, the control panel stays blank, and I get an error when I try to send a file from my computer. Also, all the lights are on except for the Wi-Fi one and the black-and-white scan light.

[zoey7886]

@deolinda, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding HP Smart Tank 720 All-in-One Printer! 

We're thrilled to have the opportunity to assist you and provide a solution.  

It sounds like your HP Smart Tank 720 Wireless All-in-One printer is currently unresponsive. Here are some steps you can take to troubleshoot and resolve the issue:

Perform a Power Reset

1. Turn off the printer by pressing the power button.
2. Unplug the power cord from the back of the printer and the electrical outlet.
3. Wait for 60 seconds.
4. Plug the power cord back into the electrical outlet and the printer.
5. Turn on the printer by pressing the power button.

Reset the Printer’s Network Settings

1. Press and hold the Wireless button and the Cancel button at the same time. This should reset the printer's network settings, making the printer ready for a fresh connection.

Check Connections

• Ensure that all cables (power and USB, if used) are firmly connected.
• Ensure that there is a strong network connection if using Wi-Fi.

Update or Reinstall Printer Drivers

1. Uninstall the current printer driver from your computer.
2. Visit the HP Support page for your printer and download the latest printer driver and software for your operating system.
3. Install the latest driver and software.  

Hope this helps! 

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards, 

[deolinda]

Yes, I’ve already followed all of these steps through WhatsApp support, and nothing works.

The printer goes into sleep mode when I’m not using it, and then it won’t respond when I try to use it again.

[zoey7886]

@deolinda, Thanks for the update — and I'm really sorry you're still stuck with a frozen printer, especially after getting it up and running for the first time. That’s definitely frustrating.

From what you’ve shared, it sounds like the printer’s sleep mode might be getting a bit too cozy and not waking up properly. When it goes into sleep, and the panel stays blank with no response — that's not how it's supposed to work.

Here’s something that might help:

Try disabling sleep mode entirely (for now):

Open the HP Smart app on your computer or phone.

Go to Advanced Settings > Preferences > Sleep Mode or Energy Settings.

Set the sleep timer to a higher value or disable it temporarily.

If that doesn't bring it back to life, the issue might be firmware-related.

➡️ Try updating the firmware from HP's website — even if it feels unresponsive, sometimes connecting it via USB to a PC and pushing an update can kickstart things.

Let me know how it goes. We’re here for you till this gets sorted 🌱

Hope this helps! 

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards,