When you plug your HP OmniBook 5 14 into an external monitor and get nothing but a blank screen, it's a real productivity killer. The issue could be anything from a simple setting to a driver quirk specific to the Snapdragon X Elite platform. Let's get your second screen working.
Press Windows + P First
This is the quickest thing to try. Press the Windows + P keys together. A menu will pop up on the right side of your screen. Make sure it's not set to PC screen only. Choose Duplicate or Extend instead. Sometimes the laptop just needs a nudge to send the signal out.
Check Your Cable and Ports
Unplug the cable from both your laptop and the monitor, then plug it back in firmly. If you're using an adapter with the USB-C ports, try a different one or connect directly if your monitor supports USB-C. I've seen more issues with flaky adapters than with the ports themselves. Also, double-check that your monitor is set to the correct input source, like HDMI 1 or USB-C.
Run HP Support Assistant for Drivers
For the OmniBook 5 14, this is a crucial step. Open the HP Support Assistant app. It's designed to find the latest, correct drivers for your specific HP hardware, which is especially important for a new ARM-based system. Let it scan and install any available updates, particularly for graphics, chipset, or firmware. A missing or generic driver can easily break external display functionality.
Restart With the Monitor Connected
Shut down your OmniBook completely, not just sleep. With the external monitor plugged in and turned on, power the laptop back on. Some systems only probe for displays during the initial boot sequence. A full restart with everything connected forces a fresh detection cycle.
Adjust Your Display Settings Manually
Go to Settings > System > Display. Click the Detect button. If your monitor appears, click on its representation and scroll down. Make sure the Multiple displays dropdown isn't set to "Disconnect this display." Also, try lowering the resolution or refresh rate here, as some monitors can be picky with signals from ARM-based PCs.
Update Drivers via Device Manager
Right-click the Start button and select Device Manager. Expand the Display adapters section. Right-click the Qualcomm Adreno GPU or any listed display device and choose Update driver. Select Search automatically for drivers. While HP Support Assistant is better, this can sometimes find a newer Microsoft-provided driver that helps.
Disable and Re-enable the Graphics Driver
In the same Device Manager window under Display adapters, right-click the graphics driver again. This time, select Disable device. Confirm if prompted. Wait about ten seconds, then right-click it again and choose Enable device. This resets the driver and can clear up a stuck state that's preventing output.
Check for App Compatibility Issues
This is a unique consideration for the OmniBook 5 14. If your display only fails when a specific app is open, that app might be running in emulation (x64 emulation) and having trouble with multi-monitor setups. Try running the app on just your laptop screen first, or check the developer's site for a native ARM64 version of the software.
Enter the BIOS to Check Settings
Restart your laptop and immediately press the F10 key repeatedly to enter the BIOS. Navigate using the arrow keys. Look for any settings related to display output, GPU settings, or USB-C/Thunderbolt configuration (sometimes called "Always On" or "DisplayPort mode"). Be careful not to change other settings. Exit saving changes if you make any, or just exit without saving to be safe.
