Modern televisions have long ceased to be simple devices for receiving broadcast signals, having become powerful multimedia centers capable of broadcasting content from any gadget in the home. Wireless connection A connection between your computer and TV allows you to access vast libraries of movies, photos, and games on the big screen without the hassle of HDMI cables. This is especially convenient when the computer case is located far from the living room, and running a cable across the entire apartment is either impossible or unattractive.
However, the setup process can seem complicated due to the variety of technologies and interfaces offered by manufacturers. Windows 10 and 11 Some offer built-in projection tools, while owners of older OS versions or specific TV models may need to install additional software. Understanding the operating principles of various data transfer protocols will help you choose the optimal method for your specific situation and avoid image lag.
In this article, we'll take a detailed look at all available device syncing methods, from built-in operating system features to third-party streaming solutions. You'll learn how to set them up. DLNA server to watch a video on how to use the technology Miracast for screen mirroring and what nuances should be taken into account to ensure stable transmission of a high-definition signal.
Wireless data transmission technologies: what to choose
Before setting up, it's important to understand the terminology, as different methods are suitable for different tasks. The main difference lies in what exactly you want to do: broadcast your desktop in real time or simply play saved files. Miracast (or Wi-Fi Direct) allows you to fully mirror the image from your PC monitor to your TV, which is ideal for presentations or gaming. At the same time, the protocol DLNA It is designed for streaming media content, where the TV acts as a renderer and the computer acts as a server.
⚠️ Note: The DLNA protocol does not support real-time transmission of system notification sounds or sounds from browser tabs; it only works with media files.
For owners of Apple technology, the technology is relevant AirPlay 2, which is now supported by many modern Smart TVs. If your TV is based on Android TV, then the built-in Chromecast function will allow you to broadcast browser tabs Google Chrome or app content. The method you choose directly depends on your computer's operating system and your TV's firmware version.
It's important to understand that wireless transmission quality is highly dependent on your local network's bandwidth. To stream 4K video, the resolution must be stable; otherwise, you'll encounter compression artifacts or buffering. The ideal condition is to connect both devices to a router operating in the 5 GHz range., since the 2.4 GHz frequency is often overloaded by neighboring networks.
Preparing equipment and network
A successful connection is impossible without properly preparing the infrastructure. The first step is to ensure that your router and TV support the required communication standards. Most modern Smart TVs from Samsung, LG, Sony, and Philips have built-in Wi-Fi modules, but older devices may require a separate USB adapter.
The computer must also be equipped with a wireless module. If you are using a desktop PC without built-in Wi-Fi, you will need to purchase an external USB adapter that supports the standard. 802.11ac or newer. Make sure the network adapter drivers are installed correctly and the device is working properly.
☑️ Checking connection readiness
Setting up the network profile in the Windows operating system is critical. The system must consider the current connection as a "Private Network" and not "Public Network," otherwise many device discovery features will be blocked for security reasons. You can check this in the network and internet settings, where it is also recommended to reset the network settings if you experience device visibility issues.
| Technology | Purpose | Latency | Quality |
|---|---|---|---|
| Miracast / Wi-Fi Direct | Screen mirroring, games | Low / Medium | High (depending on signal) |
| DLNA | View videos, photos, music | None (buffering) | Maximum (without compression) |
| Chromecast | Tab streaming | Average | Adaptive |
| AirPlay 2 | Broadcast from the Apple ecosystem | Low | High |
Method 1: Screen mirroring via Miracast and Wi-Fi Direct
This method allows you to turn your TV into a second monitor for your computer. This feature is built-in in Windows 10 and 11 and doesn't require any additional software if your TV supports the standard. Wi-Fi DirectTo get started, locate the Input/Source button on your TV remote control and select "Screen Mirroring," "Cast," or "Connect to Device."
On your computer, press the key combination Win + KThe "Connection" panel will appear on the right, where the system will begin searching for available wireless displays. Once your TV's name appears in the list, click it. A connection confirmation prompt may appear on the TV screen, which you'll need to confirm with your remote.
⚠️ Note: When using screen mirroring, audio may continue to play through your computer speakers by default. To switch, click the speaker icon in the system tray and select your TV from the list of output devices.
Once the connection is successful, you can select the operating mode: duplicate (screen copy), extend (second desktop), or only the second screen. In the display settings (Settings → System → Display) You can change the resolution and orientation of the image so that it is displayed correctly on the TV panel.
What to do if the computer doesn’t see the TV?
Make sure Wi-Fi Direct is enabled on your TV. On some Samsung and LG models, you may need to launch the Screen Share or Smart View app on the TV itself before searching from your PC. Also, check if your antivirus software or Windows Firewall is blocking the discovery of devices on your local network.
Method 2: Setting up a DLNA server for multimedia
If your goal is to watch movies or photos stored on your hard drive, creating a DLNA server is the best solution. Unlike screen mirroring, this method doesn't burden your computer's processor with real-time image rendering, but simply streams the data. In Windows, this feature is called "Streaming Media" and is enabled through "Media Streaming Settings" in Control Panel.
After enabling the feature, you need to select the folders that will be available to the TV. Typically, these are the standard "Videos," "Music," and "Pictures" libraries. You can add any other directories containing your content. On your TV, simply open the "Media Player," "Gallery," or "SmartShare" app (the name varies by brand) to see the shared folders.
The advantage of DLNA is the ability to control playback with your TV remote: pause, rewind, and change the volume. In this case, the computer only serves as storage, and you can minimize windows or even turn off the monitor while the movie is playing on the big screen. However, it's worth remembering that this method isn't suitable for playing games or using programs.
Using Google Chromecast and a browser
Owners of Android TVs or Chromecast devices can use the Google Chrome browser to cast the contents of their tabs. This is a universal method that works on any operating system with the browser installed. Open the browser, click the three dots in the upper right corner, and select "Cast."
The system will prompt you to select a source: you can cast a single tab, the entire desktop, or a specific file. Selecting "Cast Desktop" will turn your TV into a wireless monitor. This method is often more stable than built-in Miracast, especially if you're experiencing issues with your Wi-Fi adapter drivers.
This method may not be ideal for streaming games or working with graphics due to possible image compression by the browser. However, for browsing the web, sharing documents, or watching YouTube videos (which can be sent directly from the website, bypassing the load on the PC), it's an excellent solution. Image quality is adjusted automatically based on network speed.
Third-party programs and alternative solutions
When built-in tools don't work or the functionality isn't sufficient, third-party software comes to the rescue. LetsView or ApowerMirror Provides advanced control options, including microphone audio streaming and computer control from the TV screen (if the TV supports a touch interface or has a gyroscope remote). These apps often have mobile versions for syncing with smartphones.
For gamers who want to play PC games on their TV without lag, there are specialized solutions such as Steam LinkThe app is available in Smart TV app stores (Samsung, LG, Android TV). It lets you launch games from your Steam library on your computer and stream them to your TV over a local network with minimal input lag.
⚠️ Note: App interfaces and router settings may change with updates. If you can't find the described option, check the official documentation from your device manufacturer or update your TV's firmware.
Another powerful tool is a media server. PlexIt organizes your movie library into a beautiful catalog with posters and descriptions. Plex requires a server on your PC and a client on your TV. This solution turns a regular TV into a fully-fledged home theater with easy navigation through your collection.
Troubleshooting and connection optimization
Even with proper setup, users may experience choppy video or audio desync. This is most often caused by a congested airwaves or a weak signal. Try to place the router as close as possible to the TV and computer, ensuring a clear line of sight or minimal walls between them. Using the 5 GHz band is critical for transmitting high-definition video.
If the image is flickering, try lowering the output resolution on your computer or the frame rate. In the video card driver settings (NVIDIA Control Panel or AMD Radeon Software) You can experiment with the color depth. Also, make sure there are no background downloads running on your computer that could choke your local network.
- 📶 Update your router firmware and network card drivers to the latest versions.
- 🔌 Restart your router, TV, and computer—this solves 90% of connection problems.
- 🛡️ Check your Windows Firewall settings: the network profile must be set to "Private."
- ⚙️ Temporarily disable your antivirus to prevent data transfer ports from being blocked.
In some cases, the problem may lie with the TV's Wi-Fi module itself, which can't handle high bitrates. In these cases, the only solution is to use an HDMI cable or Powerline adapters, which transmit internet through the electrical wiring. However, in most cases, proper Wi-Fi network setup can achieve excellent results.
Why isn't my TV visible in the list of wireless displays?
Make sure both devices are connected to the same network (SSID). Sometimes routers create two networks (2.4 and 5 GHz) with different names—the devices should be connected to the same network. Also, check that network discovery is enabled on your TV.
How to reduce lag when gaming over Wi-Fi?
Use a router with Wi-Fi 6 support, connect your PC to the router via a LAN cable (if possible), leaving only the TV wireless. Enable Game Mode on your TV to disable image post-processing.
Is it possible to connect an old TV without Smart TV?
An old TV doesn't have Smart TV features on its own. To connect to Wi-Fi, it will need an external set-top box (Android Box, Apple TV, Chromecast) or a game console, which will handle the signal reception.
Does Wi-Fi connection affect internet speed?
Yes, when streaming high-quality video (especially 4K), some of the bandwidth is used to transmit data within the local network. However, if your internet connection is wider than 50-100 Mbps, the impact on other devices will be minimal.