To cast Windows 10 to a TV, turn on the TV’s screen-mirroring or wireless display mode, then press Windows + K on the PC and pick the TV from the Connect list. This uses Miracast, which many smart TVs and streaming sticks support. For TVs without it, use a streaming device that accepts casting from your browser, or connect with an HDMI cable. Windows 10 reached end of support on October 14, 2025. Consumer Extended Security Updates (ESU) now run until October 12, 2027.
Quick Answer
Turn on the TV’s mirroring mode > Windows + K > choose the TV.
Steps to Cast
- On the TV, open the input or app for screen mirroring or wireless display.
- Make sure the PC and TV are on the same Wi-Fi network (recommended).
- On the PC, press Windows + K.
- Select your TV and accept the connection on the TV if asked.
- Press Windows + P to choose Duplicate or Extend.
Ways to Put Windows on a TV
| Method | Notes |
|---|---|
| Miracast (Windows + K) | Built in; TV must support it |
| Browser casting | Casts a tab or video to a compatible streaming device |
| Streaming device mirroring | Some sticks and boxes accept Windows mirroring |
| HDMI cable | Most reliable, no lag |
On Windows 11, read how to screen share on Windows 11.
Roku owners can use mirroring to put a full Google search on the TV. See how to get Google on Roku.
Some casting and remote apps ask for the TV’s IP address. If you don’t have the remote handy, see how to find your TV’s IP address without a remote.
Troubleshooting
- TV not listed: Check the TV’s mirroring mode is on, and that the PC supports Miracast (run dxdiag > Save All Information and search for Miracast).
- Lag or drops: Move closer to the router or use HDMI.
- Roku devices: See casting Windows 10 to Roku.
- Windows 11: See casting Windows 11 to a TV.
Related: Fix overscan in Windows 11.
Frequently Asked Questions
Does casting play sound on the TV?
Usually yes. If not, choose the TV as the output device from the speaker icon.
Can I use the PC while casting?
Yes. Use Extend in Windows + P to use the TV as a second screen.
Why is there a delay?
Wireless casting adds some latency; for games, use HDMI.
Summary
- Turn on TV mirroring.
- Press Windows + K.
- Choose the TV.
- Use Windows + P for display mode.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.