Computer isn't detecting display

Question

Computer isn't detecting display

YuYu! 0

I have an ASUS ROG Zephyrus G16 (GU605MY). The laptop's built-in display is completely black from the moment I turn the computer on. The important part is that the computer itself is working normally. I connected my Wacom display, and I can see and use Windows normally through the Wacom. The issue is specifically with the laptop's internal display.

Current symptoms:

The built-in laptop screen is completely black from startup.
It does not display anything, including the normal Windows screen.
Windows is still running normally.
My Wacom works as a second display, and I can use the computer normally through it.
Windows does not detect the laptop's built-in display at all.
The internal display does not appear as a detected monitor/display in Windows display settings. This is not simply a situation where the display is detected but showing a black image.
The built-in display appears to not be detected at all.

Troubleshooting I have already tried:

Fully shutting down the laptop using the power button.
Restarting the laptop multiple times.
Win + Ctrl + Shift + B to reset the graphics driver. This did not restore the internal display.
Checking Device Manager and the display adapters.
Uninstalling/reinstalling the Intel integrated graphics display driver. The internal display remained completely black and undetected afterward.
Attempting to enter BIOS/UEFI using F2 during startup as a diagnostic.

The issue persists regardless of these troubleshooting steps. The NVIDIA GPU and Intel integrated graphics are still usable because Windows works normally through the Wacom display. The main issue I need help diagnosing is why the built-in display is completely black and is not detected by Windows at all, while an external display works normally. I don't believe I've previously done anything that I could assume to have caused this. My laptop was fine the previous day and then the display didn't work the next.

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2 answers

Your answer

Answer 1

Ivan B 124.5K Independent Advisor

Hi,

Just to clarify: you can't access the BIOS using the laptop screen?

Have you tried switching modes using the MUX switch in Armoury Crate?

Is the external monitor recognized as the primary display only?

If possible, could you go to Device Manager, look under the "Display adapters" tab, take a screenshot, and post it here?

Thanks.

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Answer 2

Because the internal panel is black from power-on and is not detected in Windows at all, this is no longer just a normal Windows display-mode issue. Since the external Wacom display works and the graphics driver reset and Intel driver reinstall did not help, the most useful next path is to separate a Windows/driver problem from a panel or hardware-path problem.

Check whether the internal screen ever shows anything before Windows loads.
- Power on and watch for the ASUS logo or any firmware screen.
- If the internal panel never shows even the logo, that strongly points away from a normal Windows display setting problem.
Disconnect external displays and peripherals, then test again.
- Shut down the laptop.
- Disconnect the Wacom and any other external display/peripheral.
- Power on and check whether the built-in panel comes up.
- This helps rule out display output routing issues.
Try display-mode cycling again with only the laptop screen connected.
- Press Windows + P, then press P again and Enter to cycle display modes.
- This is specifically for output misconfiguration.
Boot into Safe Mode.
- Hold the power button for 10 seconds to force shutdown.
- Repeat 2–3 times until Windows enters Recovery Mode.
- Go to Troubleshoot > Advanced Options > Startup Settings > Restart.
- Press F5 for Safe Mode with Networking.
- In Safe Mode, open Device Manager and check Display adapters.
- If the problem started after an update, try Roll back driver for the display adapter.
Reinstall the display driver from Device Manager.
- In the taskbar search box, type Device Manager.
- Expand Display adapters.
- Right-click the display adapter, select Uninstall device, and select Attempt to remove the driver for this device.
- Restart.
- Open Device Manager again, right-click the adapter, select Update driver, then Search automatically for updated driver software.
- Note: uninstalling or rolling back drivers requires administrator privileges.
If the issue is specifically a black screen after sign-in with a cursor, check the shell configuration.
- Warning: this involves editing the registry. Incorrect changes can cause serious system problems.
- Open Registry Editor and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- Verify the Shell value is set to explorer.exe.
- If it is not, back up the registry first, then correct it.
- This step is relevant only if the internal display can actually show output after sign-in; it does not explain a panel that is black from startup.
Use System Restore if the problem began recently.
- Boot into Recovery Mode.
- Go to Troubleshoot > Advanced Options > System Restore.
- Choose a restore point from before the issue started.
If none of the above changes anything, file a report in Feedback Hub.
- Include exactly when the issue started, that the built-in panel is black from startup, and that the external Wacom display works while the internal display is not detected.

Given the specific symptom that the built-in display is black from startup and not detected at all, while Windows works normally on the external display, the strongest conclusion supported here is that this is likely beyond a simple Windows display setting issue. If the internal panel never shows firmware or startup visuals, that points toward a hardware connection, panel, or similar device-level problem rather than normal desktop configuration.

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