Connect Your Chromecast to Power and HDMI First

Before you can set up WiFi, your Chromecast needs power and a video connection. Plug the USB power cable into the Chromecast device, then plug the other end into a power outlet or USB port on your TV. Next, plug the HDMI connector into an available HDMI port on your television — write down which port number you used, because you'll need to switch your TV to that input.

Turn on your TV and use the remote to select the HDMI input where you plugged in the Chromecast. You should see the Chromecast startup screen appear — it will show a code and ask you to set up the device using your phone or computer. If you see nothing, double-check that the power cable is fully inserted and that you've selected the correct HDMI input.

Key Takeaways

  • Your Chromecast connects to your TV via HDMI and needs power from a USB cable or outlet before setup begins.
  • The setup process happens on your phone or computer using the Google Home app, not on the TV itself.
  • Your Chromecast and phone must be on the same WiFi network for casting to work.
  • If setup stalls, restart the Chromecast by unplugging it for 30 seconds, then plug it back in and try again.
  • Once connected, you can cast video, music, photos, and screen content from any compatible app on your phone or computer.

read the Google Home App and Start Setup

On your phone or tablet, read the Google Home app from the App Store (iPhone) or Google Play Store (Android). Open the app and sign in with your Google account — if you don't have one, you'll need to create one before you can proceed. The app will ask permission to access your phone's location and nearby devices; allow both so it can find your Chromecast.

Tap the plus sign (+) in the top left corner and select "Set up device." Choose "Set up a new device" and the app will search for your Chromecast. When it finds it, you'll see the device name and the code that appeared on your TV screen. Tap the device to confirm it's the one you want to set up.

Connect to Your WiFi Network

The Google Home app will now ask you to choose a WiFi network. You'll see a list of networks available in your home. Select the network you use on your phone or computer — your Chromecast must be on the same network as the device you'll be casting from. Enter your WiFi password exactly as it is (passwords are case-sensitive), then tap "Next."

The app will connect your Chromecast to WiFi. This usually takes 30 to 60 seconds. You'll see a progress bar on your phone and on the TV screen. Once the connection is complete, the app will ask you to name your device — you can call it "Living Room" or "Bedroom" so you know which Chromecast you're casting to if you have more than one. Tap "Next" to finish.

Verify the Connection and Test Casting

After setup completes, the Google Home app will show your Chromecast as connected. On your TV, you should see the Chromecast home screen with a clock, weather, and rotating photos. This means your device is online and ready to receive content.

To test that casting works, open any app on your phone that supports Chromecast — YouTube, Netflix, Spotify, and Google Photos all work. Look for the cast icon (it looks like a rectangle with WiFi waves in the corner) and tap it. Select your Chromecast from the list. The content should appear on your TV within a few seconds. If it doesn't, restart both your phone and Chromecast and try again.

Troubleshoot If Your Chromecast Won't Connect

If your Chromecast doesn't appear in the Google Home app during setup, restart it by unplugging the power cable for 30 seconds, then plug it back in. Wait for the startup screen to appear on your TV, then open the Google Home app and try setup again. Make sure your phone is on the same WiFi network you plan to use for the Chromecast.

If the app finds your Chromecast but the WiFi connection fails, check that you entered your password correctly — passwords are case-sensitive and spaces count. If your WiFi network uses a 5 GHz band, try connecting to the 2.4 GHz band instead; older Chromecast models work better on 2.4 GHz. If you're still stuck, unplugging the Chromecast for a full minute and starting setup from the beginning usually resolves the issue.

If your Chromecast connects to WiFi but casting doesn't work, make sure your phone and Chromecast are on the same network. Open the Google Home app, tap the device, and check the network name listed under "Device information." If it's different from your phone's network, go back to the WiFi settings in the app and reconnect to the correct network.

Manage Your Chromecast After Setup

Once your Chromecast is connected, you can control it from the Google Home app. Open the app, tap your device, and you'll see options to adjust volume, change the background photos, restart the device, or remove it from your account. If you move your Chromecast to a different room or want to change its WiFi network, tap "Device settings" and select "WiFi" to reconnect.

You can also cast to your Chromecast from a computer using Google Chrome. Open Chrome, click the three dots in the top right, select "Cast," and choose your Chromecast from the list. Your entire screen or just a single tab will appear on your TV. This is useful for presentations, browsing, or sharing content from a laptop.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

Yes, you need a Google account to set up Chromecast using the Google Home app. If you don't have one, you can create one for free at google.com. Once setup is complete, other people in your home can cast to the device without signing in, as long as they're on the same WiFi network.

Can I use Chromecast on a 5 GHz WiFi network?

Newer Chromecast models support 5 GHz, but older ones only work on 2.4 GHz. If your Chromecast won't connect to 5 GHz, try connecting to your 2.4 GHz network instead. Check your router settings to see if you can enable both bands at the same time — most modern routers do this automatically.

What if I forgot my WiFi password?

You'll need to reset your WiFi password through your router or contact your internet provider. If you have another device on your network, you can usually find the password in that device's WiFi settings. Once you have the correct password, open the Google Home app, tap your Chromecast, go to "Device settings," select "WiFi," and enter the new password.

Can I cast from my computer to Chromecast?

Yes, if you use Google Chrome. Click the three dots in the top right corner of Chrome, select "Cast," and choose your Chromecast. You can cast a tab, your entire screen, or just audio. Your computer and Chromecast must be on the same WiFi network for this to work.

Why does casting keep stopping or freezing?

This usually means your WiFi signal is weak or your network is congested. Move your router closer to your Chromecast, or restart both your router and Chromecast by unplugging them for 30 seconds. If you have many devices on your network, try disconnecting some and casting again. If the problem continues, your internet speed may be too slow for smooth casting.