Modern technologies make it possible to do away with tangled HDMI and VGA cables, ensuring the transmission of high-quality images and sound over the air. Connecting an LG TV to a computer via a Wi-Fi router Provides access to your PC's media library directly from the big screen, turning your living room into a fully-fledged media center. This solution is ideal for watching movies, photos, and even presentations without the need to run cables across the room.
The basis of such a connection is a local network organized by your router, which connects Smart TV and a computer into a single system. This process doesn't require complex equipment—a standard router that supports standards is sufficient. IEEE 802.11n or higher, and both devices connected to the same network. It's important to understand that data transfer quality directly depends on the speed and stability of the wireless signal.
In this article, we'll take a detailed look at several proven synchronization methods, from built-in Windows operating system features to specialized software. You'll learn how to set up DLNA server, use the wireless display feature, and what nuances should be considered to minimize latency. Proper setup will ensure comfortable viewing of high-definition multimedia content.
Checking compatibility and preparing equipment
Before you begin setup, you need to make sure your equipment meets the basic requirements for wireless data transmission. The key requirement is the presence of a module. Wi-Fi in the computer and the built-in receiver in the TV LG Smart TVIf your PC is stationary and doesn't have a wireless adapter, you'll need to purchase an external USB module or use a LAN cable to connect to the router, although this article is specifically about wireless solutions.
Both devices must be located within a strong signal range. Walls, especially load-bearing ones, and household appliances can significantly weaken the signal, resulting in interruptions in high-quality video playback. It is recommended to place the router in an open area or use repeaters to boost the signal in the area where the TV is located.
⚠️ Important: Make sure the date and time are correct on both devices. A time difference can cause authorization errors and prevent devices from being detected on the local network.
It's also worth checking your TV's firmware version. LG WebOSManufacturers regularly release updates that improve the stability of data transfer protocols. To check, go to the TV settings menu and select General and find the item About TV, where the software update function is available.
Basic setup of local network and sharing
The foundation for any wireless data transfer between a PC and TV is a properly configured local network. Network discovery and file sharing must be enabled in the Windows operating system. Without this step, the TV simply won't "see" your computer in the list of available devices, even if they are connected to the same router.
First, open the Network and Wi-Fi control panel. In Windows 10 and 11, you can do this through Network Settings or the classic Control Panel. Find your active connection (usually labeled "Private Network") and enable the following settings:
- 📡 Turn on network discovery.
- 💾 Enable file and printer sharing.
- 🔒 Allow management of home network connections.
After enabling these features, the system may ask you to confirm changes to the firewall settings. You must agree to allow incoming connections for the media service. If you have a third-party antivirus with a firewall installed, you will need to duplicate the settings in its interface, adding the local network to the trusted list.
Next, you need to create a folder whose contents will be accessible to the TV. This can be any directory on your hard drive. Right-click it, select "Properties," go to the "Access" tab, and click the "Sharing" button. Advanced settingsHere you check the box "Share this folder."
Setting up a DLNA server to stream media files
Technology DLNA (Digital Living Network Alliance) is a standard for transmitting multimedia content over a home network. Televisions LG have a built-in player that can work with DLNA servers. In Windows, this role is performed by the Streaming Media service.
To activate, open the Start menu and start typing "Streaming Media Settings." In the window that opens, you'll see a list of devices on your network. If your TV LG turned on and connected to Wi-Fi, it should appear in the list. Click the button Enable media streaming.
Find your TV in the list of allowed devices and make sure the "Allowed" box is checked. This gives the TV permission to read data from your computer. You can also set the media server name here, which will be displayed on the TV screen when selecting a signal source.
☑️ Setting up a DLNA server
Now on the TV remote LG press the button Home or Input and select the signal source. Your computer should appear in the list of sources, using the name specified in Windows. Once opened, you'll see three main categories: pictures, videos, and music. Navigate using the remote.
Using the Screen Projection (Miracast) feature
If your goal isn't just to play a file, but to stream the entire desktop image or play a game on a large screen, DLNA technology won't work. This is where the standard Miracast, which in Windows is implemented as the "Projection" or "Connect to a wireless display" function.
Televisions LG support this feature natively. Find the button on the remote control Input (or the house button) and select "Screen Share" or "Connect to a wireless display" from the source menu. A connection message will appear on the screen.
On your computer, press the key combination Win + KThe "Connection" panel will appear on the right. Your TV should appear in the list of available devices. LGClick on it, and after a few seconds the image from your PC monitor will appear on your TV.
⚠️ Please note: When using Miracast, there may be a noticeable lag in the mouse cursor. This mode is ideal for videos and photos, but may not be responsive enough for fast-paced shooters due to the way video streams are encoded over Wi-Fi.
In the projection settings (available via Win + P) you can choose the operating mode: screen mirroring, desktop extension, or output only to the second screen. Extended mode allows you to use your TV as a second monitor by dragging browser or media player windows onto it.
Why might screen projection not work?
Miracast requires support from your Wi-Fi adapter. If the drivers are outdated or the adapter is too old, the "Connect" button may be missing. It also won't work if your computer is connected via cable rather than Wi-Fi (although there are exceptions for some routers that support Wi-Fi Direct).
Third-party programs for advanced features
Windows standard tools and functions Smart TV Cover most needs, but sometimes a more flexible tool is needed. Third-party media server programs allow you to stream formats that your TV's built-in player doesn't support or add subtitles on the fly.
One of the most popular programs is PlexIt automatically downloads movie covers, descriptions, and organizes your media library, creating a beautiful interface. Install the server on your PC and the client on your TV. LG (available at LG Content Store) allows you to create a powerful home media library.
Another option is to use a browser Google ChromeIf the TV has a system installed WebOS With Chromecast built-in support or via an external dongle, you can cast a browser tab directly. Click the three dots in the browser menu, select "Cast," and choose a device.
| Connection method | Best use | Delay | Quality |
|---|---|---|---|
| DLNA | Watching movies and photos | Absent | Maximum (Original) |
| Miracast | Presentations, browser | Average (100-200 ms) | Depends on the signal |
| Plex / Servers | Organizing a media library | Absent | Transcoding by |
| Chrome Cast | Web pages, YouTube | Low | High |
When choosing third-party software, it's important to consider the load on your computer's processor. Programs like Plex may use transcoding (re-encoding video on the fly) if your TV doesn't support the file format. This requires a powerful processor. CPU.
Troubleshooting and optimization
Even with proper setup, users may encounter issues. The most common is image stuttering or buffering when viewing large 4K files. This indicates insufficient Wi-Fi bandwidth.
If your router is dual-band, be sure to connect both your TV and computer to the network. 5 GHzThis range is less crowded and provides much higher data transfer rates than the traditional 2.4 GHz band. The 2.4 GHz frequency is often clogged with signals from neighboring networks and Bluetooth devices.
Also, check if your antivirus software is blocking the connection. Sometimes, after a Windows update, network settings are reset to "Public," preventing devices from being discovered. Change the network profile back to "Private" through the Wi-Fi settings.
⚠️ Please note: LG TV interfaces and webOS operating system versions are updated regularly. The layout of menu items may differ slightly from what's described. If you can't find the item you need, use the search in your TV settings (magnifying glass icon).
Frequently Asked Questions (FAQ)
Is it possible to connect a laptop to an LG TV if the router doesn't have internet access?
Yes, you can. DLNA and Miracast don't require internet access. Devices only need to be connected to the same local area network (LAN), which is created by a router. File transfer will work even without an internet provider's WAN cable.
Why can't the TV see the computer but open video files?
Most likely, your TV doesn't support the codec the video is encoded in or the file container (e.g., MKV with specific audio). In this case, installing a third-party media server (Plex, Kodi) on your PC will help. This will transcode the stream on the fly, or using a different video player on the TV itself, such as VLC.
How to reduce latency when gaming over Wi-Fi?
When gaming, a wireless connection via a router (Miracast) almost always introduces noticeable input lag. For a comfortable gaming experience, it's best to use an HDMI cable. If a cable isn't possible, make sure your PC and TV are connected to the router via Wi-Fi 6 (802.11ax) in the 5 GHz band, and close other bandwidth-consuming programs.
Does picture quality drop when connected via Wi-Fi?
When using DLNA, there is no loss of quality at all; the original file is transmitted (lossless). When using Miracast or screen projection, the video stream is compressed, which can lead to compression artifacts in fast-moving scenes, especially if the Wi-Fi signal is unstable.