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If you are trying to connect your Sony Smart TV to your Windows 11 PC and encounter a “No Signal” error, it can be frustrating. This issue often stops you from enjoying your favorite content on a bigger screen. The good news is that there are simple steps you can follow to fix this problem quickly.

In this guide, we will walk you through easy and detailed solutions to resolve the “No Signal” error. You don’t need to be a tech expert to understand or perform these steps. Let’s get your devices communicating correctly again.

Each step is explained clearly so you know exactly what to do and why it matters. By following these instructions in order, you can save time and avoid confusion.

Read through the entire process, including the FAQs and final tips, to ensure a smooth experience.

Quick Note: Prerequisites and Basic Checks

• Ensure your Sony Smart TV and Windows 11 PC are both powered on.
• Check that the HDMI or other cable connecting your PC to the TV is properly plugged in on both ends.
• Make sure your TV is set to the correct input/source matching the port where the PC is connected.
• Verify that your Windows 11 PC is not in sleep or hibernation mode.

These quick checks can save you time before diving into more detailed fixes.

Step 1: Confirm Your HDMI Cable and Ports

The HDMI cable is the main connection between your PC and TV. A damaged or loose cable often causes the “No Signal” error.

• Unplug the HDMI cable from both your Windows 11 PC and Sony Smart TV.
• Inspect the cable for any visible damage like bends, frays, or cracks.
• Reconnect the cable firmly to the HDMI port on both devices.
• If possible, try using a different HDMI cable to rule out cable faults.
• Also, test different HDMI ports on your TV to make sure the port isn’t faulty.

Why this matters: A secure and working physical connection is the foundation for signal transmission. Even a slightly loose cable can prevent your TV from detecting the input.

Step 2: Set the Correct Input Source on Your Sony Smart TV

Your TV needs to be set to the right input source to display your Windows 11 screen.

• Use your TV remote to access the Input or Source menu.
• Look for the HDMI port number where your PC is connected (e.g., HDMI 1, HDMI 2).
• Select that HDMI input and wait a few seconds for the TV to detect the signal.

Why this matters: If the TV is on a different input, it won’t receive any signal from your PC, resulting in the “No Signal” message.

Step 3: Adjust Display Settings on Windows 11

Sometimes Windows 11 doesn’t automatically send the display signal to your TV. You can manually configure display settings to fix this.

• Press Win + P on your keyboard. This opens the Project menu.
• Select one of the following options based on your needs:
• Duplicate: Show the same screen on both your PC and TV.
• Extend: Use the TV as a second monitor.
• Second screen only: Use only the TV as your display.
• If you don’t see your TV listed, press Win + I to open Settings.
• Go to System > Display. Scroll down and click Detect to find connected displays.
• Adjust resolution if needed; sometimes TVs don’t support very high resolutions.

Why this matters: Windows might default to your laptop or PC screen only. By choosing the right projection mode, you enable the signal to reach your TV.

Step 4: Update Graphics Drivers on Windows 11

Outdated or corrupted graphics drivers can cause the display signal to fail.

• Right-click the Start button and select Device Manager.
• Expand the Display adapters section.
• Right-click your graphics card and select Update driver.
• Choose Search automatically for drivers and follow on-screen instructions.
• Restart your PC after updates are installed.

Alternative method: Visit your graphics card manufacturer’s website (like NVIDIA, AMD, or Intel) to download the latest drivers manually.

Why this matters: Proper driver software ensures your PC can communicate effectively with external displays.

Step 5: Restart Both Devices

Sometimes, simply restarting your TV and PC can resolve temporary glitches.

• Turn off your Sony Smart TV and unplug it from power for about 30 seconds.
• Restart your Windows 11 PC.
• Plug the TV back in and power it on.
• Check if the signal is detected after both devices are fully rebooted.

Why this matters: Restarting clears temporary memory issues or stuck processes that may block the signal.

Advanced Option: Change Refresh Rate and Resolution

If the TV still shows “No Signal,” the PC might be sending a refresh rate or resolution it cannot handle.

• Open Settings > System > Display on Windows 11.
• Click Advanced display settings.
• Under Choose a refresh rate, select a lower rate like 60Hz.
• Adjust resolution to a standard TV resolution such as 1920×1080 (Full HD).
• Apply the changes and check if the TV now receives the signal.

FAQs

Why does my Sony TV say “No Signal” even though the cable is connected?

This usually happens if the cable is loose, the TV input source is incorrect, or Windows 11 is not projecting to the TV. Follow the steps above to troubleshoot.

Can a wireless connection cause “No Signal” errors?

Yes. If you are using wireless display features like Miracast, ensure both devices are on the same network and compatible. Wired HDMI connections are more reliable for avoiding signal issues.

How do I know if my HDMI port is damaged?

If other devices don’t work on the same HDMI port, or the TV never detects a signal on that port, the HDMI port may be faulty. Try a different port or consult Sony support.

Is it necessary to update Windows 11 to fix display issues?

While not always necessary, keeping Windows updated can fix bugs and improve hardware compatibility, which can help resolve signal problems.

Can third-party software help fix the “No Signal” error?

Generally, no. The issue is usually hardware or system settings related. Focus on cable connections, display settings, and drivers first.

When Nothing Works

If you have tried all the above steps and still see the “No Signal” error, consider the following:

• Test your PC with another external monitor or TV to isolate if the problem is with your PC or TV.
• Contact Sony customer support for hardware diagnostics on your TV.
• Visit Microsoft’s Windows 11 support website for additional troubleshooting guides: https://support.microsoft.com/windows.
• Consider professional repair if you suspect hardware damage on the TV or PC.

Conclusion

The “No Signal” error on your Sony Smart TV when connecting a Windows 11 PC is often caused by simple issues like loose cables, wrong input settings, or display configuration errors. By carefully checking your HDMI connections, setting the correct input on the TV, adjusting Windows display settings, and updating your graphics drivers, you can resolve most problems quickly.

Remember to restart both devices and try advanced settings if necessary. If all else fails, testing with different devices or seeking official support will help identify any hardware issues.

Following these step-by-step solutions will get your Sony Smart TV and Windows 11 working together smoothly, letting you enjoy your content on the big screen without interruptions.