It seems like you are facing an issue with your Windows 11 setup after enabling Secure Boot in the BIOS. The error message "No HDMI signal" suggests there might be a problem with the display output. Here are a few troubleshooting steps you can try to resolve the issue:
- Check the physical connections: Ensure that the HDMI cable is securely connected to both your computer's graphics card (or motherboard's HDMI port, if available) and your monitor's HDMI input port. You can try disconnecting and reconnecting the cable to ensure a proper connection.
- Test with a different HDMI cable and monitor: If possible, try using a different HDMI cable and monitor to rule out any issues with your current setup. This can help determine whether the problem lies with the cable, monitor, or your computer.
- Try a different display output: If your computer has multiple display output ports (such as HDMI, DVI, or DisplayPort), try using a different port to see if it resolves the issue. This can help identify if the problem is specific to the HDMI port.
- Reset BIOS settings: If the HDMI signal issue started after making changes in the BIOS, it's possible that resetting the BIOS settings to default might help. You can usually find an option within the BIOS to reset to defaults. After resetting, save the changes and exit the BIOS.
- Update graphics drivers: Outdated or incompatible graphics drivers can sometimes cause display issues. Visit the manufacturer's website of your graphics card and download the latest drivers for your specific model. Install the updated drivers and restart your computer to see if it resolves the issue.
- Check for hardware compatibility: Ensure that the hardware components of your computer, such as the graphics card and monitor, are compatible with Windows 11. Check the manufacturer's specifications and requirements for Windows 11 compatibility.
If the issue persists after trying these steps, it might be beneficial to reach out to the manufacturer's support or a computer technician for further assistance in diagnosing and resolving the problem.