The fastest way to screen share from PC to TV
The method you use depends on what hardware you have. If your TV has built-in Miracast (wireless casting), you can mirror your PC screen without any cables or extra devices — just open your PC's Quick Settings, select "Project" or "Cast", and pick your TV from the list. If your TV doesn't have Miracast, a streaming device like a Roku, Amazon Fire Stick, Apple TV, or Google Chromecast plugged into an HDMI port will add that feature. For a wired connection that works on any TV, an HDMI cable from your PC's video output port to the TV's HDMI input is the most reliable option and requires no setup beyond plugging it in.
Wireless casting is faster to set up if both devices support it. Wired HDMI is the fallback when wireless fails or when you need the connection to be rock-solid — for presentations, gaming, or video playback where lag matters. The choice comes down to whether your TV has the feature built in, what devices you already own, and whether you're willing to buy a streaming device.
Key Takeaways
- Miracast wireless casting works on most modern TVs and Windows PCs without extra hardware, but both devices must support it.
- A streaming device like Roku, Fire Stick, or Chromecast adds wireless casting to any TV with an HDMI port.
- An HDMI cable is the most reliable method and works on every TV, but ties your PC to the TV's location.
- Windows PCs use the "Project" or "Cast" menu in Quick Settings; the exact steps vary slightly by Windows version.
- Audio and video both travel over the same connection — wireless or wired — so you don't need a separate audio cable.
Wireless casting with Miracast on Windows
Open the Quick Settings panel on your Windows PC by pressing Windows key + A. Look for a button labeled "Project" or "Cast to a device" — the exact name depends on your Windows version. Click it, and your PC will scan for nearby Miracast-compatible devices. Your TV should appear in the list if it has Miracast built in and is turned on and connected to the same Wi-Fi network as your PC.
Select your TV from the list. Your PC will send a connection request to the TV, and you may see a prompt on the TV screen asking you to accept the connection. Once accepted, your PC screen will appear on the TV. You can choose to mirror the entire screen or extend your display so the TV shows a different workspace than your monitor. To disconnect, open Quick Settings again and select "Disconnect" or unplug the streaming device.
If your TV doesn't appear in the list, check that Miracast is turned on in your TV's settings — the menu location varies by brand. Some older TVs don't support Miracast at all; if yours doesn't, a streaming device is your next option.
Using a streaming device for wireless casting
Plug a Roku, Amazon Fire Stick, Google Chromecast, or Apple TV into an available HDMI port on your TV and power it on. Each device has its own setup process, but they all add wireless casting to your TV regardless of the TV's age or built-in features. Once the device is set up and connected to your Wi-Fi, your Windows PC will detect it as a casting target.
On your PC, open Quick Settings and select "Project" or "Cast to a device". Your streaming device should appear in the list. Click it, and your screen will mirror to the TV within a few seconds. The streaming device handles the wireless connection, so your TV itself doesn't need Miracast support — the device provides it.
Streaming devices cost between $30 and $150 depending on the brand and features. They're worth buying if you plan to cast regularly, because they're faster to set up than an HDMI cable and let you move between rooms without unplugging anything. They also let you use streaming apps built into the device itself, like Netflix or YouTube, without needing your PC on.
Wired connection with an HDMI cable
Locate the HDMI output port on your PC — most laptops and desktops have at least one. Connect one end of an HDMI cable to your PC and the other end to any available HDMI input port on your TV. Turn on the TV and switch to the correct HDMI input using your TV remote. Your PC screen should appear on the TV automatically, usually within a few seconds.
If nothing appears, right-click on your PC's desktop and look for an option like "Display settings" or "Graphics properties". Open it and look for a "Detect" or "Connect display" button. This forces your PC to search for connected displays. If your TV still doesn't show up, try a different HDMI port on the TV — some ports may be disabled in the TV's settings.
HDMI is the most reliable method because it doesn't depend on Wi-Fi, Bluetooth, or driver support. The connection is when ready and stable, making it the best choice for presentations, video editing, or gaming where any lag or dropout would be noticeable. The downside is that you're physically tethered to the TV's location by the cable length.
Adjusting display settings after you connect
Once your TV is connected — whether wireless or wired — you can choose how your PC uses the extra screen. Right-click on your desktop and select "Display settings". You'll see options to mirror your display (show the same thing on both screens) or extend it (use the TV as a second workspace). Mirroring is useful for presentations or watching video with others. Extending lets you drag windows between your monitor and TV, giving you more screen space to work with.
You can also adjust the resolution and refresh rate of the TV display in the same settings menu. If the image looks blurry or stretched, try lowering the resolution to match what your TV actually supports — most TVs work best at 1920 × 1080 or 3840 × 2160 (4K). Audio will play through your TV's speakers by default, but you can change it back to your PC's speakers or a connected headset in the Sound settings if you prefer.
Troubleshooting when casting doesn't work
If your PC doesn't see your TV in the casting menu, first check that both devices are on the same Wi-Fi network. Your PC and TV must be able to reach each other over the network for wireless casting to work. Restart both devices — power off the TV and PC completely, wait 10 seconds, and turn them back on. This clears temporary connection problems that prevent discovery.
If the TV appears but the connection fails, move your PC closer to the TV or router. Wireless casting is sensitive to distance and interference from walls or other devices. If you're far from the router or the signal is weak, the connection may drop repeatedly. Wired HDMI avoids this problem entirely.
For wired HDMI, try a different HDMI cable if the first one doesn't work — some cables are damaged or don't carry video properly. Also try a different HDMI port on the TV; some ports are disabled by default or reserved for specific features. If your PC has multiple video outputs (HDMI, DisplayPort, USB-C), try a different one.
When to use each method
| Method | Best for | Drawbacks |
|---|---|---|
| Miracast wireless | Quick setup, no extra hardware, moving between rooms | Requires TV with Miracast; Wi-Fi dependent; can lag |
| Streaming device | Any TV, reliable wireless, built-in apps | Costs $30–$150; takes up HDMI port; needs power |
| HDMI cable | Presentations, gaming, video editing, maximum stability | Limited by cable length; requires compatible port |
Miracast is the fastest if your TV supports it and you don't want to buy anything. A streaming device is worth the cost if you cast regularly or your TV is old. HDMI is the safest choice when reliability matters more than convenience.
Frequently Asked Questions
Can I use screen sharing while my PC is locked?
No. Your PC must be unlocked and awake for casting to work. If your screen goes to sleep, the cast connection will pause or drop. Keep your PC awake by adjusting power settings or moving the mouse occasionally while you're casting.
Will casting slow down my PC or internet?
Wireless casting uses some Wi-Fi bandwidth and a small amount of CPU power, but most modern PCs handle it without noticeable slowdown. Wired HDMI has no impact on your internet or Wi-Fi. If your Wi-Fi is already slow or congested, casting may stutter — move closer to the router or use HDMI instead.
Can I cast audio only without the video?
Miracast and HDMI both send video and audio together — you can't separate them. If you only want audio on your TV speakers, use a separate audio cable or Bluetooth speaker instead of screen casting.
What if my TV has an older HDMI version?
HDMI is backward compatible, so a newer cable works with older TV ports and vice versa. The only limitation is that older HDMI versions (1.3 and earlier) don't support 4K resolution, but they work fine for standard HD video and audio.
Do I need to install drivers for casting to work?
For Miracast and HDMI, Windows handles the drivers automatically in most cases. If casting doesn't work and you have an older graphics card, check the manufacturer's website for the latest driver update. Streaming devices come with their own setup software that you install on the device itself, not on your PC.