How to Fix HP Envy 6400 and 7640 Printer Issues: Offline and Not Printing Troubles Explained

HP Envy printers are known for their sleek design, wireless capabilities, and overall reliability. However, even top-tier devices can run into problems. Two frequently reported issues are the HP Envy 6400 printer offline error and when the HP Envy 7640 will not print. If you're dealing with either of these, don't worry — there are practical steps you can take to get your printer functioning properly again.

This guide will help you diagnose and fix both problems with minimal hassle.

Resolving the HP Envy 6400 Printer Offline Error

Seeing your HP Envy 6400 printer offline message can be confusing and frustrating, especially when you haven’t changed anything in your setup. This status usually means that your printer and computer have lost communication, either due to a network issue or a configuration error.

Why Does the HP Envy 6400 Go Offline?

Some common causes include:

Network connection drop

Incorrect default printer settings

Power or software interruptions

Outdated printer drivers

How to Fix It:

1. Restart Your Devices

Begin by restarting your printer, Wi-Fi router, and computer. This simple step can resolve many temporary connectivity issues.

2. Verify Network Connection

Ensure your HP Envy 6400 is connected to the correct Wi-Fi network. You can check this directly from the printer's control panel under the network settings. If it’s not connected, re-enter your Wi-Fi credentials and reconnect.

3. Set Printer as Default

On Windows:

Go to Control Panel > Devices and Printers

Right-click on your HP Envy 6400

Select “Set as default printer”

On Mac:

Go to System Preferences > Printers & Scanners

Choose the HP Envy 6400 and set it as the default

4. Disable “Use Printer Offline” Mode

Sometimes, the offline setting is enabled by accident. Navigate to your printer settings, right-click the HP Envy 6400, and uncheck the “Use Printer Offline” option.

5. Update the Printer Driver

Visit HP’s official support website and download the latest drivers for the HP Envy 6400. After installation, restart your computer to ensure the update is fully applied.

After completing these steps, your HP Envy 6400 printer offline issue should be resolved, and your device will return to online status.

Fixing the HP Envy 7640 When It Will Not Print

If the HP Envy 7640 will not print, there could be a range of causes from basic paper jams to software conflicts. Identifying the exact reason will help you apply the correct solution quickly.

Possible Causes:

Empty or incorrectly installed cartridges

Print jobs stuck in the queue

Dirty or clogged printheads

Driver or firmware problems

Troubleshooting Steps:

1. Check Ink and Cartridge Status

Use the printer's touchscreen to check ink levels. If any cartridge is empty, replace it. Also, ensure the cartridges are seated properly in their respective slots.

2. Clear the Print Queue

On Windows:

Open the Control Panel > Devices and Printers

Double-click your HP Envy 7640

Cancel all print jobs in the queue

On Mac:

Go to Printers & Scanners

Select the HP Envy 7640

Open the print queue and cancel all jobs

3. Inspect for Paper Jams

Open all access panels on your printer and inspect for any jammed paper or debris. Gently remove any found, making sure there are no small pieces left behind.

4. Update or Reinstall Printer Driver

Go to the HP support site, search for the HP Envy 7640, and download the latest drivers. Remove the existing driver from your system first to avoid conflicts. After reinstalling, restart your computer and try printing again.

5. Run HP’s Print and Scan Doctor

This free tool from HP can automatically identify and fix many common printer issues. Download it from HP’s website, run a diagnostic, and follow the prompts to fix your device.

6. Check USB or Wi-Fi Connection

If you’re using a USB connection, try a different cable or port. For wireless printing, confirm both the printer and the computer are connected to the same Wi-Fi network.

Once these steps are completed, you should no longer face the issue where your HP Envy 7640 will not print.

Preventive Measures to Avoid Future Issues

Regularly update your printer’s firmware and drivers

Use the printer weekly to prevent ink from drying up

Keep your printer clean and in a dust-free environment

Avoid using third-party cartridges, which can sometimes cause compatibility problems

Final Thoughts

Both HP Envy 6400 printer offline and HP Envy 7640 will not print issues can be disruptive, but they're usually straightforward to resolve with the right approach. From checking connections and cartridges to updating drivers, these practical steps should help you restore your printer’s functionality in no time.

For persistent issues beyond these troubleshooting steps, it’s best to contact HP support or consider having your printer serviced professionally. A proactive approach to maintenance and updates can prevent most of these common errors from occurring in the future.