Casting from your PC to Chromecast works through Google Chrome or the built-in Casting feature in Windows 11

You can send video, audio, or your entire screen from a Windows PC to a Chromecast-connected TV in two main ways. The simplest is using Google Chrome's built-in Cast button, which takes about 30 seconds to set up. Windows 11 also has a native Cast feature that works without opening a browser. Both methods require your PC and Chromecast to be on the same Wi-Fi network.

The Chrome method works on any Windows PC with Chrome installed. The Windows 11 method works only on Windows 11 machines. If you're on Windows 10 or an older system, Chrome is your only option. Neither method requires you to install additional software beyond what you already have.

Key Takeaways

  • Your PC and Chromecast must be connected to the same Wi-Fi network before casting will work.
  • Google Chrome's Cast feature lets you send a single tab, all tabs, or your entire screen to the TV in seconds.
  • Windows 11 has a built-in Cast option in the Quick Settings menu that doesn't require Chrome.
  • Casting stops automatically when you close the tab or turn off the Cast feature, and the TV returns to its normal input.
  • If casting fails, restart your Chromecast device, refresh your browser, and check that both devices are on the same network.

Casting from Google Chrome on any Windows PC

Open Google Chrome and navigate to the video, website, or content you want to watch. Look for the three vertical dots (menu button) in the top-right corner of the browser window. Click it, then select Cast from the dropdown menu. A new window will appear showing all available Chromecast devices on your network.

Click the Chromecast device you want to use. The window will show you three casting options: Cast tab sends only the current browser tab to your TV, Cast desktop sends your entire screen, and Cast file lets you select a video or audio file from your computer. Choose the option that matches what you want to watch. Your content will appear on the TV within a few seconds.

While casting a tab, you can minimize Chrome, open other windows, or even close the browser window—the cast will continue. To stop casting, click the Cast button again and select Stop casting, or press the stop button that appears on your TV remote if your Chromecast supports it.

Casting from Windows 11 without opening Chrome

Windows 11 includes a Cast feature built into the operating system. Press the Windows key and the A key together to open Quick Settings on the right side of your screen. Look for the Cast button (it looks like a rectangle with curved lines coming from the corner). Click it to see all available Chromecast devices.

Select your Chromecast from the list. Your entire screen will begin casting to the TV. Unlike Chrome's tab-casting option, Windows 11's Cast feature always sends your full screen, so anything you do on your PC will appear on the TV. This is useful if you want to show a presentation, play a game, or display files from your computer.

To stop casting in Windows 11, open Quick Settings again, click the Cast button, and select Disconnect. Your screen will return to showing only on your monitor, and the TV will go back to its normal input.

Making sure your PC and Chromecast are on the same network

Casting only works when both devices are connected to the same Wi-Fi network. Check your PC's network connection by clicking the Wi-Fi icon in the system tray (bottom-right corner of your screen). Make sure you're connected to the same network name (SSID) that your Chromecast is using.

To check your Chromecast's network, open the Google Home app on your phone or tablet, select your Chromecast device, tap the settings gear icon, and look for the network name listed under Wi-Fi. If your PC and Chromecast are on different networks—for example, if your PC is on a 5 GHz band and your Chromecast is on 2.4 GHz—they won't see each other. Most home routers broadcast both bands under the same network name, so this is usually not a problem, but it's worth checking if casting fails.

Casting video files directly from your PC

If you have video or audio files saved on your computer, you can cast them without opening a web browser. In Chrome, click the menu button, select Cast, then choose Cast file. A file browser will open. Navigate to the video or audio file you want to watch and select it. Chrome will begin casting the file to your Chromecast.

Supported file types include MP4, WebM, and Ogg video formats, as well as MP3, WAV, and Ogg audio formats. If your file is in a different format (like MKV or AVI), you may need to convert it first or use a different casting method. The file will play on your TV while your PC acts as the remote control.

Troubleshooting when casting won't start

If the Cast button doesn't appear in Chrome, make sure you're using an up-to-date version of the browser. Open Chrome's menu, click Help, then About Google Chrome. The browser will check for updates automatically. If an update is available, Chrome will read and install it, and you may need to restart the browser.

If your Chromecast device doesn't appear in the Cast list, restart the Chromecast by unplugging it from power for 10 seconds, then plugging it back in. Wait for the device to fully boot (the light on the device will stop blinking). Then try casting again. If the device still doesn't appear, check that your PC and Chromecast are truly on the same network by looking at your router's connected devices list or the Google Home app.

If casting starts but the video freezes or lags, move your PC closer to the router or Chromecast, as Wi-Fi interference can slow the connection. Closing other programs that use your internet connection (like downloads or video calls) can also improve performance. If the problem persists, restart both your PC and Chromecast.

What happens to your PC while you're casting

While you're casting a tab in Chrome, your PC remains fully usable. You can open other browser tabs, switch to different programs, or even minimize Chrome entirely—the cast will keep playing on your TV. This is different from casting your entire desktop, where everything on your screen appears on the TV in real time.

If you're casting your full screen (either through Chrome's desktop option or Windows 11's Cast feature), be aware that anything you do on your PC will be visible on the TV. This includes notifications, pop-ups, and any windows you open. For presentations or when you want privacy, casting a single tab or file is often the better choice.

Frequently Asked Questions

Can I cast from my PC to a Chromecast on a different Wi-Fi network?

No. Your PC and Chromecast must be on the same Wi-Fi network to communicate. If they're on different networks, the Chromecast won't appear in your Cast list. Check that both devices are connected to the same network name (SSID) in your Wi-Fi settings.

Does casting use a lot of internet bandwidth?

Casting sends the video stream over your local Wi-Fi network, not through the internet, so it doesn't use your internet plan's data. However, a weak Wi-Fi signal can cause buffering or lag. If you have other devices using heavy bandwidth (like someone streaming video elsewhere in your home), it may affect casting quality.

Can I use my PC while casting a full-screen presentation?

Yes, but everything you do will appear on the TV. If you need to check notes or open files without showing them on the TV, cast a single Chrome tab instead, or use presentation mode in your software (like PowerPoint's Presenter View), which hides your notes from the display.

What if my Chromecast keeps disconnecting during casting?

This usually means your Wi-Fi signal is weak or unstable. Try moving your PC or router closer to the Chromecast, or restart your Chromecast by unplugging it for 10 seconds. If the problem continues, check whether other devices on your network are using a lot of bandwidth and pause them if possible.

Can I cast audio only without video?

Yes. If you're casting a music or podcast website in Chrome, only the audio will play on your TV (the screen will show a blank or black display). You can also cast audio files directly using Chrome's Cast file option by selecting an MP3 or WAV file.