To resolve the issue of your TCL smart TV not loading the PC screen with the “video decoder is restarting” message, follow these actionable steps:

1. Restart Your TV and PC: Restarting both devices can often resolve temporary glitches.

- Turn off the TCL TV, unplug it from the power source, and wait for 1-2 minutes before plugging it back in and turning it on.
- Similarly, restart your PC to ensure it’s operating smoothly.

2. Update Software: Make sure that both your TCL smart TV and PC are running the latest software versions.

- For the TCL TV: Navigate to Settings > System > Software Update and check for updates.
- For the PC: Go to Settings > Update & Security > Windows Update and check for available updates.

3. Check Screen Mirroring Settings: Confirm that the screen mirroring feature on your TCL TV is correctly set up.

- Go to the Settings menu on your TV, then select Devices and find the Screen Mirroring option. Ensure it is enabled.
- Follow the instructions on how to connect your PC to your TCL TV via screen mirroring or casting.

4. Test a Different Device: To determine whether the issue lies with the TV or the PC, try to mirror another device (like a smartphone or tablet) to your TCL TV. If another device connects successfully, the issue may be exclusive to your PC.

5. Check Connections: Make sure any cables involved (such as HDMI or Wi-Fi if you are using wireless casting) are properly connected and functioning.

6. Factory Reset the TV: If the problem persists, a factory reset may be required, which can clear any software errors:

- To perform a factory reset, go to Settings > System > Advanced system settings > Factory reset. Note that this will erase all settings and data on the TV.

7. Consult Support Forums: For persistent issues, visit community forums for TCL TVs, such as the Roku Community. Users often share solutions for similar problems there – learn more.

8. Contact TCL Support: If none of the steps resolve the issue, reach out to TCL customer support for more tailored assistance.

By following these steps, you should be able to troubleshoot the "video decoder is restarting" message and successfully mirror your PC screen to your TCL smart TV. - learn more - learn more