cast screen like presentation?

To cast the whole PC desktop screen using Google Cast extension in Chrome browser to your Android TV or Google Cast Receiver device:

Weird, it works fine with my Sony Android TV 49x8300C which has Google Cast receiver built-in.

I think it is quite straightforward...but anyway you can check these steps:

https://support.google.com/chromecast/answer/6059461

https://support.google.com/chromecast/answer/3209990

https://support.google.com/chromecast/answe...f_topic=4602553

You can also ask for help in the Google cast forum threads:

https://productforums.google.com/forum/#...orum/chromecast

https://productforums.google.com/forum/#...ast/hPJHCUsPS8I

Step 5: Can other devices cast successfully?

If other devices (e.g. phones, tablets) can cast successfully, then it's likely an issue with your router or network.
Try rebooting your Wi-Fi router by unplugging and plugging the power source.
Make sure that your Google Cast and other devices are connected to the same network. Check that the network name displayed on the TV after the Google Cast device boots up is the same as the currently-selected network in the computer's available Wi-Fi list.
If other devices can't cast successfully, then issues with your computer and/or Chrome are likely.

Make sure your computer is on the same network as Google Cast device.
Confirm your Chrome browser is up to date. To check the version number, type about://chrome into the search bar. At a minimum, the Chrome browser should be running Chrome 44. If the browser needs to be updated, click Update Google Chrome to update your Chrome browser to the latest version.
Disconnect from Virtual Private Networks (VPNs) or proxy servers. The Google Cast device can't communicate with a laptop over these networks. If you need help with this, please check with your service provider for instructions.
Ensure that firewall/antivirus software are up to date and aren’t blocking connections to the Google Cast device. Firewall: If you are renting a wireless router, please contact your internet provider. If you purchased the router, check your network firewall settings.

The googlecast functionality is now native in chrome browser, you could try, rather than using the cast extension Google cast support