The Basic Steps to Cast Your PC to a Chromecast Device

To cast your PC screen to a TV with Chromecast, open Chrome on your computer, click the three-dot menu in the top right corner, select "Cast", choose your Chromecast device from the list, and then click "Cast" again. Your PC screen will appear on your TV within a few seconds. The entire process takes less than a minute once your Chromecast is set up and connected to the same Wi-Fi network as your computer.

Your PC and Chromecast must be on the same Wi-Fi network for casting to work. If you have never cast before, make sure your Chromecast is plugged into power, connected to your TV with an HDMI cable, and has completed its initial setup through the Google Home app on a phone or tablet. Once that is done, your Chromecast will appear in Chrome's Cast menu automatically.

Key Takeaways

  • Open Chrome, click the three-dot menu, select "Cast", pick your Chromecast device, and click "Cast" to send your screen to the TV.
  • Your PC and Chromecast must be connected to the same Wi-Fi network for casting to work.
  • You can cast your entire screen or just a single Chrome tab, depending on what you want to show on the TV.
  • If your Chromecast does not appear in the Cast menu, restart both your PC and the Chromecast device, then try again.
  • Casting uses your Wi-Fi connection, so moving far away from your router or losing signal will interrupt the cast.

Casting Your Entire Screen Versus a Single Tab

Chrome gives you two casting options. Casting your entire screen sends everything on your monitor to the TV—your desktop, all open windows, and any notifications that pop up. This is useful when you want to show a presentation, browse the web together, or play a game. Casting a single tab sends only one Chrome tab to the TV while keeping everything else on your PC private. This is better when you want to share a video or document without showing your email, chat windows, or other open tabs.

To cast a single tab instead of your whole screen, right-click on the tab you want to share, select "Cast", and then choose your Chromecast device. The tab will appear on the TV, but your other tabs and windows stay hidden on your PC. You can switch between tabs on your computer without changing what appears on the TV—only the tab you cast will show.

Checking Your Wi-Fi Connection and Chromecast Setup

Before you try to cast, confirm that your PC is connected to the same Wi-Fi network as your Chromecast. Look at the Wi-Fi icon in the bottom right corner of your Windows taskbar or the top right of your Mac menu bar. Your Chromecast's network name appears in the Google Home app on a phone or tablet—check that your PC is joined to that same network.

If your Chromecast is new or has not been used in a while, set it up through the Google Home app first. Plug the Chromecast into your TV's HDMI port and into power, wait for the setup screen to appear on your TV, then follow the app's instructions to connect it to Wi-Fi. Once setup is complete, your Chromecast will stay connected and appear in Chrome's Cast menu whenever you are on the same network.

What to Do If Your Chromecast Does Not Appear in the Cast Menu

If you click "Cast" in Chrome and your Chromecast device is not in the list, the most common cause is that your PC and Chromecast are on different Wi-Fi networks. Check both devices' network settings and make sure they are connected to the same network name. Some homes have separate 2.4 GHz and 5 GHz networks—Chromecast devices work best on 2.4 GHz, so if your PC is on 5 GHz only, switch it to the 2.4 GHz network.

If they are on the same network and the device still does not appear, restart both your PC and your Chromecast. Unplug the Chromecast from power for 10 seconds, plug it back in, and wait for the light to stop blinking. Then restart your PC. Once both devices are back online, open Chrome again and check the Cast menu. The device should appear within 30 seconds.

Controlling Your Cast and Ending the Connection

While your screen is casting, a blue "Cast" icon appears in Chrome's address bar to show that casting is active. You can control the cast from your PC—move windows, open new tabs, or adjust volume—and all changes appear on the TV with a slight delay of one to two seconds. The TV shows exactly what your monitor shows, so anything you do on your PC is visible to anyone watching the TV.

To stop casting, click the blue "Cast" icon in Chrome's address bar and select "Stop casting". Your screen will disappear from the TV when ready, and your PC will no longer be connected to the Chromecast. You can also stop casting by unplugging the Chromecast or turning off your PC, though stopping through Chrome is cleaner and does not interrupt your work.

Common Casting Problems and How to Fix Them

If your cast keeps dropping or freezing, the problem is usually a weak Wi-Fi signal. Move your PC closer to your router, or move your router closer to your Chromecast. Walls, metal objects, and distance all weaken Wi-Fi. If you are casting video or playing games, a weak signal will cause stuttering or lag on the TV. Switching to a 2.4 GHz network (instead of 5 GHz) can also help, even though 5 GHz is normally faster—Chromecast devices are more stable on 2.4 GHz.

If the cast starts but the TV shows a black screen or "no signal", check that your Chromecast is plugged into the correct HDMI port on your TV and that the TV is set to that HDMI input. Use your TV remote to switch to the HDMI input where the Chromecast is connected. If the TV still shows nothing, unplug the Chromecast for 10 seconds and plug it back in. The Chromecast's light should turn on, and the setup screen should appear on the TV within 30 seconds.

Using Chromecast with Non-Chrome Browsers and Applications

Chromecast casting works best in Chrome, but some other applications also support casting. Spotify, YouTube, Netflix, and Google Photos all have built-in Cast buttons that let you send content directly to your Chromecast without casting your entire screen. Look for a Cast icon (usually a rectangle with a Wi-Fi symbol in the corner) in these apps. Click it and select your Chromecast device to send just that content to the TV.

If you are using a browser other than Chrome—such as Firefox, Edge, or Safari—you cannot use the built-in Cast feature. Your options are to switch to Chrome for casting, or to use your phone or tablet to cast instead. Many phones and tablets have native casting features that work with Chromecast, and some apps like Spotify and YouTube work the same way on mobile devices as they do in Chrome.

Frequently Asked Questions

Do I need to be the owner of the Chromecast to cast to it?

No. Anyone on the same Wi-Fi network can cast to a Chromecast device. The device does not require a password or login to receive a cast. If you want to restrict who can cast to your Chromecast, you can enable guest mode or change Wi-Fi access through the Google Home app, but by default, anyone connected to your network can cast.

Can I cast while using a VPN on my PC?

It depends on your VPN setup. If your VPN routes all traffic through a remote server, your PC and Chromecast may appear to be on different networks, and casting will not work. If your VPN only encrypts certain traffic or allows local network access, casting may still work. The easiest solution is to turn off your VPN temporarily while casting, then turn it back on afterward.

What happens to my PC when I cast—does it stay awake?

Yes. While you are casting, your PC stays awake and active. If your PC goes to sleep or enters screensaver mode, the cast will stop. To keep casting for a long time, adjust your PC's power settings to prevent sleep, or disable the screensaver temporarily. You can do this in Windows Settings under "System" > "Power & sleep" or on Mac in "System Preferences" > "Energy Saver".

Can I cast audio only, without the video?

Not through screen casting. If you want to send only audio to a speaker connected to your Chromecast, use a music or podcast app that has a built-in Cast button, such as Spotify or Google Podcasts. These apps let you cast audio without casting your screen. For screen casting, both video and audio are sent together.

Why is there a delay between my PC and the TV?

Casting introduces a one- to two-second delay as your PC sends the screen image over Wi-Fi to the Chromecast. This is normal and unavoidable. The delay is usually not noticeable for watching videos or presentations, but it can be annoying for gaming or real-time interaction. If the delay bothers you, try moving closer to your router to strengthen the Wi-Fi signal, which may reduce it slightly.