It's impossible to imagine a modern home without a multitude of digital devices, and there's often a need to stream content from a large monitor or laptop to a widescreen TV. Using an HDMI cable is a classic solution, but it limits mobility and requires running wires across the entire room. A wireless Wi-Fi connection solves the clutter problem, allowing you to enjoy photos, videos, and games on a large screen without the hassle of cables.
In this article we will take a detailed look at How to connect a computer to a TV via Wi-Fi, using built-in operating system features and third-party apps. You'll learn about various data transfer protocols, such as Miracast and DLNA, and get step-by-step instructions for Windows 10 and 11. Connection stability plays a key role here, so we will pay special attention to setting up the router.
Before you begin, make sure both devices are on the same local network. fundamental condition for most wireless broadcasting technologies to work, ignoring which will result in devices simply not “seeing” each other in the list of available ones.
Wireless video transmission technologies and their features
There are several basic standards for transmitting video and sound over the air. Understanding the differences between them will help you choose the best method for your specific situation. Miracast — is a technology developed by the Wi-Fi Alliance that allows you to broadcast your screen image directly, creating a direct connection between devices or using the router as a bridge.
Unlike him, DLNA (Digital Living Network Alliance) works differently: it doesn't mirror the entire screen, but allows you to stream media files (photos, videos, music) from your computer to your TV, where they play using the TV's built-in player. This is convenient for watching movies, but not suitable for sharing your desktop.
Also worth mentioning are proprietary solutions such as Google Chromecast built-in or Apple AirPlayThey are often built into modern Smart TVs and offer more stable operation and additional features, but require installing the appropriate software on a computer or using the Chrome browser.
- 📺 Miracast is ideal for full screen mirroring (games, presentations).
- 🎬 DLNA — suitable for background downloading of heavy video files without putting a strain on your PC.
- 🌐 Chromecast — provides better integration with your browser and streaming services.
⚠️ Note: Protocols may be named differently in your TV menu. Look for names like "Screen Share," "Smart View," "Wireless Display," or "Casting."
Preparing equipment and network
The quality of your wireless connection directly depends on the condition of your local network. If you plan to stream high-definition (4K) video or play games, make sure your router supports the standard. 802.11ac (Wi-Fi 5) or newer. Older standards may not provide sufficient throughput.
Both devices—the computer and the TV—must be connected to the same Wi-Fi network. If your router has separate 2.4 GHz and 5 GHz bands, it's highly recommended to use that band. 5 GHz for both devices. It provides higher data transfer speeds, which is critical for video streaming.
Also, check if your TV's software is up to date. Manufacturers regularly release patches that improve the stability of network modules and compatibility with new versions of Windows. Go to Settings → Support → Software Update and run the scan.
☑️ Checking connection readiness
It's important to note that the distance between the router and devices also matters. Walls and household appliances can cause interference. If the signal is weak, the image may flicker or become pixelated.
Connecting Windows 10 and 11 to Smart TV via Miracast
Microsoft operating systems have built-in support for Miracast technology, making the connection process extremely simple. You don't need to install third-party drivers if your Wi-Fi adapter supports this feature (which almost all modern adapters do).
First, activate the signal reception mode on your TV. Depending on the brand (Samsung, LG, Sony), this can be a separate application on the home screen or an item in the signal sources (Input) menu, which is called "Wireless Display" or "Screen Share".
On your computer, press the key combination Win + KThe "Connect" sidebar will appear on the right. The system will begin searching for available devices on your network. When your TV's name appears in the list, click it.
Settings → System → Display → Connect to a wireless displayAfter selecting a device, a connection permission prompt may appear on the TV screen. Use your TV remote to confirm ("Allow" or "Accept"). After a few seconds, the desktop image will appear on the big screen.
⚠️ Please note: TV interfaces are frequently updated. The layout of menu items may differ from those described, so please refer to the actual actions, not just the button names.
DLNA Streaming: Viewing Media Files
If your goal isn't to duplicate your desktop, but simply to watch a movie or photos stored on your hard drive, DLNA technology will be more energy efficient. In Windows, this feature is available through "Streaming Media Settings."
Open the Control Panel and find the "Media Streaming Settings" section. Click "Turn on media streaming." In the window that opens, you'll see a list of devices on the network. Find your TV and check the "Allowed" box.
Now open any video file or photo folder on your computer using a standard player (such as Movies & TV or Windows Media Player). In the player interface, find the "Cast to Device" button and select your TV.
- 📂 The file will start playing on your TV, and you can use your computer for other tasks.
- ⏸️ Playback control (pause, rewind) is available both from the remote control and from the PC.
- 🔊 The sound will also be transmitted to the TV's audio system.
This method is especially useful if the Wi-Fi router is far from the TV and a direct Miracast connection is unstable. DLNA is less sensitive to latency because it buffers video.
Using Google Chrome to Stream
If built-in Windows methods don't work or your TV supports Chromecast, the Google Chrome browser is a great all-in-one solution. It allows you to cast individual tabs or the entire screen.
Open the Chrome browser on your computer. Click the three dots in the upper-right corner of the menu and select "Cast...". The browser will scan the network and offer a list of available devices.
In the window that opens, you can select a source: "Cast a tab," "Cast a screen," or "Cast a file." For full mirroring, select the second option. This often works more reliably than native Miracast in Windows, especially on Android TVs.
The advantage of this method is its cross-platform nature: you can even connect to a Mac or Linux computer if Chrome is installed. Furthermore, the browser handles some of the stream encoding, which can reduce the load on the TV's Wi-Fi module.
Setting up display and sound options
After a successful connection, it's important to configure the image output correctly. Often, the default resolution doesn't match the TV's native display resolution, resulting in a blurry image or black bars around the edges.
Right-click on the desktop and select "Display Settings." Under "Multiple displays," you can choose between "Duplicate these displays" and "Extend these displays."
For watching movies, mirroring mode is more convenient, and for working, extending the TV becomes a second monitor. Don't forget to scroll down to "Scale and Layout" and select the recommended resolution (usually 1920x1080 or 3840x2160).
| Parameter | TV recommendation | Recommendation for PC |
|---|---|---|
| Permission | Native (1080p/4K) | Depends on the monitor |
| Refresh rate | 60 Hz | 144 Hz and above |
| Color format | RGB / YCbCr 4:4:4 | RGB Full |
| Game mode | Enable (to reduce Input Lag) | Not required |
It's also worth checking your sound settings. If the sound is coming from your laptop speakers instead of your TV, click the speaker icon in the system tray, select the playback device, and select your TV or receiver.
Solving problems and delays
Wireless connections are rarely perfect. The most common issues are lag between mouse actions and on-screen reactions, as well as image stuttering. This is often due to Wi-Fi congestion from neighboring routers.
Try changing the broadcast channel in your router settings. Use Wi-Fi analyzer apps on your smartphone to find the least congested channel and manually enter it in the router settings, instead of "Auto."
If the delay persists, disable heavy downloads and torrents on your computer. Streaming protocols are sensitive to bandwidth constraints. Also, make sure your antivirus or firewall isn't blocking local traffic between devices.
⚠️ Note: Some antivirus programs (such as Kaspersky or ESET) have built-in firewalls that can block device detection. If you experience problems, try temporarily disabling your network protection.
Why isn't my TV showing up in the list of devices?
Most often, the problem is that the devices are on different subnets (for example, one is connected to a guest Wi-Fi network and the other to the main network). Also, make sure the "AP Isolation" feature is disabled on the router, which prevents devices from seeing each other.
Is it possible to connect a computer to a TV without a router?
Yes, if your TV supports Wi-Fi Direct technology. In this case, the computer connects directly to the TV's Wi-Fi module, creating an access point. However, the speed and stability of this connection are usually lower than with a full-fledged router.
How to reduce audio latency when watching videos?
Audio lag is often caused by buffering. Try using players with audio lag correction features (such as VLC Media Player). Your TV settings may also have a "Lip Sync" or "Audio Sync" option that allows you to manually adjust the audio.
Does streaming work over a guest Wi-Fi network?
Usually not. Guest networks are isolated from the main local network for security purposes, so a computer and TV connected to different SSIDs (even on the same router) will not be able to exchange data.