no blue light

[Tom1642]

No blue light on HP Envy 7640 and not able to connect to PC  so I can't print anything.

[Sneha_01]

Hi @Tom1642,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

If your HP Envy 7640 printer has no blue light and you’re unable to connect it to your PC, it suggests a potential issue with the printer’s wireless connectivity or power. Here’s a step-by-step guide to troubleshoot and resolve this issue:

Troubleshooting Steps

Check Power Supply

• Verify Power Connection: Ensure that the power cord is securely plugged into both the printer and the wall outlet.
• Inspect Power Cord and Adapter: Check for any visible damage to the power cord or adapter. If possible, try a different power outlet.

Power Cycle the Printer

• Turn Off Printer: Press the power button to turn off the printer.
• Unplug: Disconnect the power cord from the printer and wait for about 60 seconds.
• Plug In and Power On: Reconnect the power cord and turn the printer back on.

Check for Printer Indicators

• Look for Lights: Observe if any other lights are illuminated or if there are any error messages on the printer’s display panel.
• Check for Blue Light: The blue light is typically for wireless connectivity. If it's off, it might indicate a connectivity issue or a power issue.

Reset Network Settings

• Access Printer Menu: Use the printer’s control panel to navigate to the network settings. This can often be found under Setup > Network.
• Restore Defaults: If available, choose the option to restore network settings to default. This can help resolve connectivity issues.

Check Wireless Network

• Ensure Network Availability: Make sure your wireless network is operational and that other devices can connect to it.
• Check Router: Restart your router if necessary. Sometimes network issues can be resolved by simply rebooting the router.

Reconnect Printer to Network

• Use Printer Menu: On the printer’s control panel, go to Setup > Network > Wireless Setup Wizard (or similar option). Follow the prompts to reconnect the printer to your Wi-Fi network.
• Use HP Smart App: If the printer is still not connecting, try using the HP Smart app on your mobile device to reconnect the printer to your network.

Update Printer Firmware

• Check for Updates: Ensure that the printer’s firmware is up-to-date. You can check for updates via the HP Support website or through the HP Smart app.

Check for Printer and PC Connection

• Verify Connection: If the printer is connected via USB, ensure that the USB cable is securely connected to both the printer and the PC.
• Try a Different USB Port: If the connection is via USB, try connecting to a different USB port on your PC.

Perform a Hard Reset

• Turn Off Printer: Turn off the printer and unplug it from the power source.
• Hold Power Button: Press and hold the power button for about 15 seconds.
• Reconnect and Restart: Plug the printer back in and turn it on.

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support