Screens connected to docking station stopped being detected suddenly

[Rabbiya]

Hi, I have an HP Envy laptop and I have 2 dell screens connected to it through Thinkpad USB C gen 2 docking station. The screens stopped working all of a sudden, however the mouse and keyboard connected through the docking station are still working. If I disconnect one screen the other one starts working fine. However if both are connected they are not being detected. I would appreciate help with this. Thanks!

[Garp_senchau]

@Rabbiya, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

Power Cycle Everything

• Turn off your HP Envy laptop, docking station, and both monitors.
• Unplug the dock from power and your laptop.
• Wait 30 seconds, then reconnect everything and turn them back on.

Check Docking Station Connections

• Try swapping cables or using different ports on the dock.
• If one screen works but two don’t, your dock may have limited bandwidth for multiple displays.

Update Drivers and Firmware

• Go to Device Manager > Display Adapters and update the graphics driver.
• Visit HP's website to check for BIOS and Thunderbolt/USB-C firmware updates.
• Check Lenovo's website for firmware updates.

Check Display Settings

• Press Win + P and select Extend mode.
• Go to Settings > System > Display and check if both monitors are detected. If not, click Detect Displays and try manually enabling them.
• Also, check for proper resolution, which the docking station and monitor support (for instance, 60 Hz or 30 Hz).

Check the Docking Station Power Supply

• Ensure the docking station is plugged into its original power adapter and not just drawing power from the laptop.
• Try a different power outlet 

Reference documents:

HP Notebook and All-in-One PCs - Troubleshooting screen issues (Windows 11, 10) | HP® Support

HP Notebook PCs - Tips for using an HP docking station or hub | HP® Support

I hope these steps help resolve the issue

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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