Troubleshooting issues connecting a Windows desktop or laptop computer to a TCL Google TV can involve several steps, including checking cables, settings, and compatibility. Here’s a step-by-step guide to help you resolve common connection issues:

1. Check Cables and Ports

• HDMI Cable: Ensure that the HDMI cable is securely connected to both the computer and the TCL TV. Try using a different HDMI cable to rule out a faulty cable.
• HDMI Port (TV): Connect the HDMI cable to a different HDMI port on the TV to see if the problem is with the port.
• HDMI Port (PC): Connect the HDMI cable to a different HDMI port on the laptop/desktop to see if the problem is with the port.

2. Select the Correct Input Source

• Use the TV remote to select the correct HDMI input source. Press the Input or Source button on your remote and choose the HDMI port to which your computer is connected.

3. Update Graphics Drivers

• Make sure your computer’s graphics drivers are up-to-date. You can update your drivers through the Device Manager or by downloading the latest drivers from the manufacturer’s website (e.g., NVIDIA, AMD, or Intel).

4. Check TV Settings

• HDCP Settings: Ensure HDCP (High-bandwidth Digital Content Protection) settings are enabled if your content requires it.

5. Try a Different Connection Method

• If HDMI is not working, try using a different connection method such as a VGA or DisplayPort to HDMI adapter, if your computer supports it.

6. Restart Devices

• Sometimes a simple restart can fix connectivity issues. Turn off both your computer and TV, unplug them from the power source, wait for a minute, then plug them back in and turn them on.
• Also, try restarting the PC with the TV connected to it.

7. Test with Another Device

• To rule out issues with the TV or the computer, try connecting another device to the TV using the same HDMI cable. If the other device works, the issue might be with your computer’s HDMI port or settings.

8. Reset TV Settings

• As a last resort, you can reset the TV to its factory settings. Go to Settings > System > About > Reset < Factory Reset.
• Please note that by doing this it will erase all stored information. Essentially it will be like setting your TV up all over again.

Additional Tips:

• Wireless Display (Miracast): If HDMI is not an option, you can also use wireless display features like Miracast. Ensure both your computer and TV support Miracast, then follow the pairing instructions in the Connect app on Windows and the corresponding setting on the TCL TV.
• Check for Firmware Updates: Ensure your TCL TV has the latest firmware updates installed. Go to Settings > System > About > Software Update to check for updates.

If you still experience issues after following these steps, you might want to consult TCL support or your computer’s manufacturer for further assistance.