Modern televisions LG Smart TV These are powerful multimedia centers capable of not only receiving broadcast channels but also streaming content from other devices. Using a wireless Wi-Fi connection to connect the TV to a personal computer or laptop opens up a wide range of possibilities: from watching high-definition movies without the hassle of cables to showing presentations on a large screen. This solution eliminates the need to run long HDMI cables across the room.
The setup process may seem complicated at first glance, but the operating system webOSThe built-in syncing system on LG TVs makes interaction with external devices incredibly easy. In this article, we'll cover all available syncing methods in detail, from built-in Windows features to third-party media servers. You'll learn how to set up image and audio transmission with minimal latency and high quality.
It's worth noting that connection stability directly depends on the quality of your wireless network. If your router supports the standard 5 GHz, it is highly recommended to use this range for transmitting video streams, as it provides higher throughput compared to traditional 2.4 GHzThis is especially important when streaming 4K video.
Preparatory stage and equipment testing
Before you begin software setup, you need to make sure your hardware is physically ready. Both devices—and the TV—are ready. LGYour device and your computer should be within range of a strong signal. Ideally, both devices should be connected to the same Wi-Fi network. If you have a dual-band router, make sure both devices are connected to the same frequency, although modern routers often automatically route traffic optimally.
It's important to make sure your software is up to date. On your LG TV, go to the settings menu and find the section General → About TV → Check for updatesOutdated firmware may contain errors in the module. Wi-Fi Direct or data transfer protocols, which will lead to unstable operation or a complete loss of connection. Similar steps should be taken on the computer by updating the network card drivers.
⚠️ Please note: Some corporate Wi-Fi networks have restrictions on data exchange between devices (Client Isolation). If you are trying to connect a TV in an office or public place, the connection may fail even with the correct settings.
To diagnose signal quality, you can use built-in speed tests. On LG TVs, this can be done via an app. LG Service Room or third-party apps from the store LG Content StoreIf the speed is lower 20 Mbps, comfortable high-quality streaming will be difficult, and the image may lag.
Using Miracast (Wireless Display) Technology in Windows
The easiest and fastest way to broadcast your computer screen to an LG TV is to use technology Miracast, which in Windows is called "Wireless Display." This method allows you to duplicate your desktop or extend it onto a TV screen without the need for additional cables. The technology operates at the operating system driver level, ensuring low latency.
To start working, press the button on the TV remote control. Input or select the option from the application launcher menu Screen Share (Screencasting). Your TV's name and connection status will appear on the screen. Make sure Wi-Fi Direct is enabled, although on modern models webOS It turns on automatically when you launch the application.
On a computer running Windows 10 or 11, press the key combination Win + KThe "Connection" panel will open on the right, where the system will begin searching for available wireless displays. Your LG TV should appear in the list. After selecting a device, a connection confirmation prompt may appear on the TV screen, which you'll need to accept using the remote.
- 📺 Second screen only: The image from the PC will disappear and will be displayed only on the TV.
- 💻 Recurring: the picture on the monitor and TV will be identical (clone mode).
- 🖥️ Expand: The TV will become a second monitor onto which you can drag program windows.
- 🚫 Disable: wireless connection break.
If your computer can't see your TV, check the "Projecting to this PC" service in Windows settings. It's also worth making sure your firewall isn't blocking incoming connections for the device discovery service. In some cases, rebooting the Wi-Fi module on your router can help.
☑️ Miracast Diagnostics
Broadcast multimedia via DLNA and media servers
If your goal is not to duplicate the desktop, but to play video files, photos or music stored on your computer's hard drive, it is better to use the protocol DLNALG TVs have a built-in player that can scan the network and find media servers. In Windows, the standard "Media Streaming" feature can serve as such a server.
To activate, open "Media Streaming Settings" through the Control Panel or search. In the window that opens, you will see a list of devices on the network. Find your LG TV (it may appear as [LG] webOS TV) and click "Allow." After this, your video, music, and picture folders will become accessible to your TV.
On your TV, go to the Source menu (the button with the house icon or a separate button Input) and select the "Connections" or "Devices" section. Your computer should appear there. Logging in will give you access to the file system shared with your media content. This is a great way to watch high-bitrate movies without loss of quality, as the file is transferred directly, without re-encoding.
⚠️ Note: The DLNA protocol does not support interactive desktop streaming. You will only be able to play files; you will not be able to display your computer's browser or games on your TV using this method.
For more advanced users, it is recommended to use specialized software, such as Universal Media Server or PlexThese programs not only distribute files but can also stream content from online resources and automatically download movie covers and descriptions, creating a beautiful media library.
Why can't the TV see the files?
If your computer sees your TV but can't see your files, check your network type. In Windows, the network should be marked as "Private," not "Public." On a public network, file sharing is disabled by default for security reasons. You can change this in your network and internet settings.
Comparison of connection methods: characteristics table
The choice of connection method depends on your specific needs. Below is a comparison of the main methods to help you choose the most suitable option for your situation. Each method has its own advantages and limitations in terms of quality and functionality.
| Method | The main goal | Latency | Image quality | Sound |
|---|---|---|---|---|
| Miracast | Screen mirroring, presentations | Low / Medium | Up to 1080p / 4K (router dependent) | It is transmitted |
| DLNA | Viewing videos/photos from a disk | None (buffering) | Original (uncompressed) | It is transmitted |
| Chrome Cast | Browser tab broadcasting | Average | Depends on the channel | It is transmitted |
| HDMI (cable) | Games, maximum quality | Minimum | Maximum (4K HDR) | It is transmitted |
As the table shows, Miracast may not be fast enough for gaming, so a wired connection or cloud gaming is better. However, for viewing photo reports or YouTube from a laptop, wireless methods are ideal.
It's also worth mentioning that using Miracast puts a strain on the Wi-Fi adapter of your computer and TV. If your router is older, you may experience some image freezing. DLNA, on the other hand, is less demanding on network performance because the data is transmitted as a stream with buffering.
Setup via Google Chrome browser
If Windows' built-in tools aren't working correctly, or you need to broadcast the contents of a specific browser tab, the browser's "Broadcast" feature is a great solution. Google ChromeThis method is convenient because it doesn't require complex network configuration and works on any operating system where this browser is installed.
Open the Chrome browser on your computer and make sure it's updated to the latest version. In the upper-right corner, click the three vertical dots (menu) and select Broadcast... (Cast). The browser will begin searching for devices on the local network. If your LG TV supports Chromecast built-in technology (which is true for most new models), it will appear in the list.
In the window that opens, you can choose what to broadcast: a browser tab, the entire desktop, or a specific file. The "Broadcast Desktop" feature lets you show any program running on your PC. For better quality, you can select the maximum resolution in the broadcast settings, if your Wi-Fi speed allows.
The advantage of this method is its cross-platform compatibility. You can control playback from your phone if you share a Google account, or quickly switch to document sharing without reconfiguring Windows system settings. However, for permanent use as a second monitor, this method is less convenient due to the need to launch a browser.
Solution and troubleshooting
Even with proper setup, technical difficulties can still arise. One of the most common issues is that the TV simply doesn't appear in the list of available devices. First, check to see if your antivirus or Windows Firewall is blocking network discovery. Try temporarily disabling the protection to test.
The second common cause is IP address desynchronization. If the router assigned addresses from different subnets to the computer and TV (for example, if there's a guest Wi-Fi network), they won't see each other. Make sure both devices are connected to the main network, not the guest network.
- 🔄 Reboot: Unplug the TV for 30 seconds (full power reset), reboot the router and computer.
- 📶 Frequency: Switch your devices to the 5 GHz frequency if 2.4 GHz is congested with neighboring networks.
- 🛡️ Firewall: Check if access is allowed for the Projecting application in Windows Firewall settings.
- 📡 Drivers: Update your wireless adapter driver through Device Manager.
⚠️ Please note: TV operating system interfaces and firmware are subject to update. Menu item locations and function names may differ slightly from those described in the instructions. Always consult the latest user manual for your specific model.
If nothing helps, try resetting the network settings on your TV. In the menu All Settings → General → Network Find the reset option and perform it. Afterwards, re-enter your Wi-Fi password. This often resolves issues with frozen network services on the TV.
Frequently Asked Questions (FAQ)
Is it possible to connect a laptop to an LG TV if there is no router?
Yes, this is possible using Wi-Fi Direct technology. In this case, the TV automatically creates a wireless network to which the laptop connects. However, the laptop won't be able to connect to the internet unless it has a second adapter (such as Ethernet or a 4G modem), as the Wi-Fi module will be busy connecting to the TV.
Why is there a delay in audio when screen sharing?
Delay (desynchronization) of audio and video is common during wireless transmission. This is due to the time it takes to encode and decode the stream. Try lowering the streaming resolution in Windows settings or using a wired connection for games where synchronization is important.
Do older LG TVs support Screen Share?
Screen Share (Miracast) has been available on LG TVs running the webOS platform since approximately 2014. Older models (NetCast and others) may not support direct wireless connection to a PC screen; they require external adapters such as a Miracast dongle or Chromecast.
How to improve picture quality over a wireless connection?
To improve quality, make sure your router supports the standard. 802.11ac (Wi-Fi 5) or ax (Wi-Fi 6). Place the router closer to the TV, avoiding obstacles like walls. Also, in the TV settings, select the "Bright" or "Game" picture mode to reduce post-processing, which adds latency.