Dell XPS 15 90 running Windows 10 Home (Version 22H2) and Dell Thunderbolt Dock - WD19TB not detected

A month ago, my Dell XPS 15 90 laptop stopped connecting correctly to the Dell Thunderbolt Dock - WD19TB. The dock still charges the laptop, but it's not recognized by the operating system. In this article, we'll discuss potential solutions to this issue.

Check Docking Station Connection

1. Ensure the docking station is properly connected to the laptop and the power source.
2. Check the physical connections between the laptop, dock, and power adapter.
3. Verify that the docking station's ports are not obstructed.

Update Drivers

1. Press the Windows key + X and select Device Manager.
2. Expand the Mice and other pointing devices section.
3. Right-click Dell Thunderbolt Dock and select Update Driver.
4. Choose Search automatically for updated driver software.
5. Follow the on-screen instructions to complete the update process.

Check Power Management Settings

1. Press the Windows key + X and select Control Panel.
2. Click on Hardware and Sound, then Power Options.
3. Click on Change plan settings next to the currently active power plan.
4. Click on Change advanced power settings.
5. Expand the USB settings, then USB selective suspend setting.
6. Set the settings for both On battery and Plugged in to Disabled.
7. Click OK to save the changes.

Reinstall Docking Station Drivers

1. Press the Windows key + X and select Device Manager.
2. Expand the Mice and other pointing devices section.
3. Right-click Dell Thunderbolt Dock and select Uninstall device.
4. Confirm the uninstallation.
5. Restart your laptop.
6. After restarting, the docking station should be automatically reinstalled.

Check BIOS Settings

1. Restart your laptop and press the F2 key during bootup to enter the BIOS settings.
2. Navigate to the Thunderbolt settings.
3. Ensure that the Thunderbolt Controller is enabled.
4. Save the changes and exit the BIOS settings.

Check System Firmware

1. Visit the Dell Support website and find the latest system firmware for your laptop.
2. Download and install the firmware update.

Check Thunderbolt Port

1. Check if the Thunderbolt port on your laptop is damaged or obstructed.
2. If the port appears damaged, contact Dell Support for further assistance.

Troubleshooting Additional Steps

1. Run the Windows built-in troubleshooter for hardware and devices.
2. Check the Event Viewer for any related error messages.
3. Update the Thunderbolt driver manually from the Dell website.
4. Try using a different Thunderbolt cable.

References

• Dell XPS 15 90 User Guide
• Dell Thunderbolt Dock WD19TB User Guide
• Dell XPS 15 90 Thunderbolt Dock Troubleshooting
• Dell Thunderbolt Dock WD19TB Troubleshooting
• Windows 10 Thunderbolt Troubleshooting