To cast Windows 10 to a TV, turn on the TV’s screen mirroring feature, press Windows key + K on the PC, and select your TV from the Connect list. This uses Miracast, which most smart TVs from Samsung, LG, Sony and others support, along with Roku and Fire TV devices. For a Chromecast or Google TV, cast from Chrome or Edge instead. If casting is laggy, an HDMI cable is the most reliable option.
Applies to: Windows 10, version 22H2. The same steps work on Windows 11. Last reviewed October 8, 2026.
Method 1: Cast with Windows key + K (Miracast)
- Turn on the TV and its screen mirroring or Miracast mode. The name varies: Screen Mirroring (Samsung, Roku), Screen Share (LG), Screen mirroring in the input list (Sony) or Display Mirroring (Fire TV).
- Make sure the PC and TV are on the same Wi-Fi network.
- On the PC, press Windows key + K, or open Action Center and select Connect.
- Select your TV in the list.
- Accept the connection on the TV if asked.
Your desktop appears on the TV. To stop, press Windows key + K and select Disconnect.
For Roku-specific steps, see how to cast to Roku from Windows 11; they’re the same on Windows 10.
Method 2: Cast to Chromecast or Google TV
Chromecast doesn’t support Windows’ Connect feature. Use a browser instead:
- Open Chrome.
- Select the three dots > Cast, save and share > Cast.
- Choose your Chromecast or Google TV.
- Select Sources to choose between casting the tab or the whole screen.
In Edge, select the three dots > More tools > Cast media to device. Streaming sites such as YouTube also have their own cast button, which plays video directly on the TV for better quality.
Method 3: Use an HDMI cable
- Connect an HDMI cable from the PC to the TV. Laptops without HDMI may need a USB-C to HDMI adapter.
- Switch the TV to that HDMI input with its remote.
- Press Windows key + P and choose how to use the screen.
A cable has no lag and works with any TV, which makes it the best option for games and video.
Choose how the TV screen is used
Press Windows key + P:
- Duplicate: the same picture on both screens.
- Extend: the TV becomes a second desktop.
- Second screen only: only the TV shows the picture.
If the picture doesn’t fit the TV, see how to fit your PC screen to a TV or monitor.
Send sound to the TV
When you cast or connect HDMI, sound usually switches to the TV. If it doesn’t, select the speaker icon on the taskbar, open the device list at the top and choose the TV.
Troubleshooting
The TV doesn’t appear in the Connect list
- Check the TV’s mirroring mode is on and both devices use the same network (not a guest network).
- Check the PC supports Miracast: press Windows key + R, type
dxdiag, select Save All Information and search the file for Miracast: Available. - Update the PC’s Wi-Fi and graphics drivers.
Casting lags or drops
Move closer to the router, use its 5 GHz band, or switch to an HDMI cable. Close apps that use a lot of network bandwidth.
Protected video shows a black screen
Some streaming services block screen mirroring. Use the service’s TV app or its built-in cast button instead.
Frequently asked questions
Do I need a smart TV?
Not for HDMI. For wireless casting, the TV needs built-in screen mirroring, or a streaming stick such as Roku, Fire TV or Chromecast plugged into it.
Can I play games on the TV wirelessly?
Casting adds a delay that makes fast games hard to play. Use an HDMI cable, or a game streaming app designed for TVs.
Can I use my phone as a remote while casting?
Only for apps that support it, such as YouTube. When mirroring the whole screen, control the PC with its own keyboard and mouse, or a wireless keyboard.
Can I cast to an Apple TV?
Not with Windows’ built-in tools. Apple TV uses AirPlay, which Windows doesn’t support without extra software.
Windows 10 support
Windows 10 no longer gets regular updates. If you’re staying on it, see how to enroll in Windows 10 Extended Security Updates. On Windows 11, see how to cast Windows 11 to a TV.
Related: share your screen in Windows 10.
Related: how to connect a Fire TV Stick to a Windows 11 laptop.
Related: how to watch Apple TV on Windows 10.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.