Modern multimedia capabilities allow you to transform your living room into a fully-fledged entertainment center, with your TV acting as a large monitor for your PC. Users often look for a way to display content from a laptop or desktop computer on the screen. Smart TV, to watch movies, photos, or play games without unnecessary wires. Wireless data transfer technology in the operating system Windows 10 It is implemented in sufficient depth that the connection process is accessible even for beginners.
The main advantage of using Wi-Fi The advantage of this connection is that there's no need to run long HDMI cables throughout the apartment. This is especially important if the computer is in another room or simply inconveniently positioned relative to the TV. However, for the technology to work reliably Miracast or DLNA It is critical that both devices are on the same local network and have working network adapters.
In this article, we'll cover all available synchronization methods in detail, from built-in operating system tools to specialized software. You'll learn how to set up screen projection, start streaming media files, and what to do if your computer can't detect your LG TV. Properly configuring your router settings and network profiles will help avoid lag and audio desync.
Hardware and software requirements
Before you begin setup, you need to make sure your equipment meets the minimum technical requirements for wireless streaming. First and foremost, the TV itself. LG Smart TV must support technology Miracast or have a built-in function Screen ShareAlmost all models released after 2014 are equipped with the necessary module, but in budget series without "smart" features, this can be a barrier.
A computer or laptop must also have certain characteristics, among which the key role is played by the presence of a Wi-Fi module that supports the standard Wi-Fi DirectIf you're using a desktop PC with an external USB adapter, make sure its drivers are installed correctly and the device is operating in access point or client mode. Your operating system should be up-to-date, as older Windows 10 builds may lack the necessary components. projections.
⚠️ Important: If your router is running in AP Isolation mode, devices will not be able to discover each other on the network. This feature is often enabled on guest networks or in offices for security, but for a home media system, it should be disabled in the router settings.
The quality of the wireless channel directly impacts the smoothness of the image and the absence of compression artifacts. For video transmission in the following resolutions: 1920×1080 or 4K It is recommended to use a range 5 GHz, which is less congested by neighboring networks and provides higher throughput. The 2.4 GHz band can cause image flickering and audio desynchronization, especially when microwaves or Bluetooth devices are nearby.
Setting up screen projection via Miracast
The easiest and fastest way to mirror your entire desktop or a single window is to use Windows 10's native "Connect" feature. This method is based on the standard Miracast, which allows for uncompressed video streaming with minimal latency. To activate, press the key combination Win + K on the keyboard, and a search bar for available displays will appear on the right.
On the LG TV side, you need to launch the application Screen Share or find the corresponding item in the signal sources menu (Input). After the TV goes into standby mode, it will become visible to your computer. Select your device from the list on your PC, and after a few seconds, your desktop image will appear on the big screen. Depending on your settings, you can choose to mirror your screen or extend your workspace.
☑️ Check before connecting Miracast
It is important to note that when using a wireless connection, you may experience a slight input lag, known as input lagThis isn't critical for watching movies or presentations, but it can be a hindrance during fast-paced games or when working with graphics that require high precision. If you plan to use the TV as a second monitor for text editing, make sure the fonts are legible from a distance, as subpixel rendering over Wi-Fi may differ from that over a wired connection.
What to do if the connection is interrupted?
Frequent connection drops may be caused by interference or channel congestion. Try reconnecting by moving closer to the router, or change the Wi-Fi channel in the router settings to a less congested one (e.g., 1, 6, or 11 for 2.4 GHz).
Using DLNA to play media files
If your goal is not to duplicate your desktop, but to play videos, music, or photos stored on your computer's hard drive, it is better to use the technology DLNAThis protocol allows an LG TV to view the PC as a network storage device and play content directly using the TV's native decoders. This reduces the load on the computer's processor and often provides better picture quality, as the TV processes the signal itself.
To activate this feature, open "Media Streaming Settings" in the Windows Control Panel. Here, you can allow library access for specific devices by finding your TV in the list. LG webOSAfter applying the settings, a computer icon will appear in the "Media" or "Home Network" menu on your TV, giving you access to the "Videos," "Pictures," and "Music" folders.
The advantage of this method is the ability to control playback with the TV remote, which is convenient for home theater systems. You can pause, rewind, and change tracks without leaving the couch. However, navigating the PC file system via the TV may not be as convenient as using the familiar Windows Explorer, so pre-sorting files into folders can be very helpful.
| Parameter | Miracast (Projection) | DLNA (Media) | HDMI (Cable) |
|---|---|---|---|
| Input Lag | High (50-150 ms) | Low (depending on buffer) | Minimum (<10 ms) |
| Image quality | Compressed (artifacts possible) | Original (uncompressed) | Original (no loss) |
| Control | From a computer | From the TV remote control | From a computer |
| PC load | High (coding) | Low (gear only) | Low |
Third-party streaming software
Built-in Windows and LG tools work well, but sometimes their functionality is insufficient, especially when you need to stream a browser or specific video formats. In such cases, third-party solutions such as LetsView, AirServer or ApowerMirrorThese programs often offer more flexible quality settings, the ability to record your screen, and control your computer from your TV (if you have a touchscreen or emulation).
Installing such software requires installing the client part on both the computer and the LG TV (via the app store) LG Content Store(if the app is available, or via an HDMI stick with Android TV). The wireless connection in this case is established via proprietary protocols developed by developers, which can be optimized better than standard Miracast, providing a more stable frame rate.
⚠️ Please note: When using free versions of third-party programs, a watermark or ad may appear on the screen, and session time may be limited. For continuous use, we recommend purchasing a license or looking for open-source alternatives, such as OBS with a plugin for streaming to a local network.
The ability to stream browser tabs deserves special attention. Google ChromeUsing the "Cast" menu in your browser, you can send a specific tab or the entire screen to your TV if it supports the protocol. Chromecast built-in (available on new LG models with webOS 4.0 and above). This is ideal for watching online videos from sites that don't have a native app on your TV.
Solving common connection problems
Despite the standardization of technologies, users often encounter a situation where the computer simply doesn't see the TV in the list of available devices. First, check the network type in Windows: the profile should be set to "Private Network" and not "Public." In a public profile, the system blocks detection of other devices for security reasons, making it impossible to search. Smart TV.
Outdated wireless adapter drivers may also be the problem. Go to Device Manager, find your Wi-Fi module, and check for updates. Sometimes, a full network settings reset with the command netsh winsock reset in the command prompt running as administrator, after which a system reboot is required. Keep in mind that antivirus software or third-party firewalls may also block the ports required for Miracast.
If the image is transmitted but the sound is coming from your computer speakers, you need to manually switch the output device. Click the speaker icon in the Windows system tray, select the up arrow, and select your LG TV from the list of playback devices. If it's not listed, try updating your sound card drivers or reconnecting the device through the "Sound" panel in the classic control menu.
Optimizing wireless broadcast quality
To achieve maximum picture smoothness, it's important to minimize the number of devices consuming bandwidth while streaming. If someone in the next room starts downloading torrents or playing online games, the channel's bandwidth may not be sufficient to transmit the high-definition video stream. Ideally, you should assign a separate guest SSID to your media system or use a guest network with speed limits for other users.
The screen resolution on your computer also plays a role: if you are broadcasting an image in 4K over Wi-Fi, the load on the channel and the TV decoder will be colossal. For comfortable viewing of films, it is often enough to reduce the resolution to 1920×1080 or 1080p, which will significantly improve connection stability. In the Windows projection settings, you can select "Second Screen Only" mode to avoid wasting resources rendering the image on the laptop's small screen.
The screen refresh rate (Hz) over a wireless channel is usually limited 60 Hz, and in poor signal conditions it can drop to 30 Hz, which makes the mouse cursor "sticky." This is acceptable for office tasks, but for dynamic content, it's best to ensure ideal signal reception conditions, perhaps by moving the router closer to the TV or using a Wi-Fi repeater with passthrough support.
Why isn't my LG TV showing up in the list of available devices?
Most often, the problem stems from different subnets. Make sure both the PC and TV are connected to the router's main SSID, and not to the guest network or the 5 GHz band if the router splits them into different subnets. Also, check the "UPnP Helper Module" service in Windows—it should be running.
Is it possible to play games over a Wi-Fi connection?
Technically possible, but due to input lag, it will only be comfortable for turn-based strategy games or card games. For shooters, racing games, and fighting games, a latency of 100+ ms will make playing virtually impossible. In such cases, use an HDMI cable.
How to improve the quality of a picture if it is blurry?
Blurry images are often caused by incorrect scaling. Check the aspect ratio settings on your TV (use the Aspect Ratio button on the remote) and set the mode to "Original" or "Just Scan." On your computer, ensure the output resolution matches the native resolution of the TV display.
Does Miracast audio work?
Yes, Miracast supports multi-channel audio. However, if there is no sound, check that the "LG TV" device is selected as the default playback device in the Windows volume mixer.