Modern multimedia systems allow you to transform your living room into a real cinema using only your home network. Sharing video content, photos, or even your entire desktop on a big screen has become a standard for homeowners. Smart TVLG appliance owners are at an advantage, as the company has implemented several effective wireless communication protocols.
Syncing devices doesn't require extensive networking knowledge or expensive hardware. All you need is your laptop and TV on the same local network and updated software. We'll cover all available methods, from built-in Windows features to specialized apps.
Before you begin setup, make sure your router supports the 802.11n standard or higher to ensure stable, high-definition video streaming. Slow Wi-Fi speeds can cause lag or artifacts on the screen. A properly configured network is essential for a smooth, uninterrupted viewing experience.
There are several main technologies that are used LG Smart TV for receiving a signal. These include the native Miracast protocol, DLNA technology for multimedia, and the proprietary Smart Share system. The choice of a specific method depends on what exactly you want to stream: the system interface or just files.
⚠️ Note: If your router distributes the network at 2.4 GHz and 5 GHz frequencies under different names (SSIDs), make sure that the PC and TV are connected to the same frequency, preferably 5 GHz for video streaming.
Equipment preparation and network infrastructure
The first step is to check the physical connection and router settings. Devices must be able to "see" each other, which is impossible with client isolation or guest Wi-Fi mode enabled. Basic network configuration is often ignored by users, leading to discovery errors.
Check if the feature is enabled UPnP in your router settings. This protocol allows devices to automatically discover each other on the local network without manually assigning IP addresses. In most modern LG models, this option is enabled by default, but in corporate or strictly configured home networks, it may be disabled.
It's also worth paying attention to Windows Firewall. Antivirus software or built-in security software often blocks incoming connections from unknown devices, including your TV. You need to add an exception for the private network profile to allow detection.
- 📶 Make sure both devices are connected to the same router and not to different access points.
- 🔌 Make sure that "LG Connect Apps" or a similar discovery service is enabled on your TV.
- 🛡️ In Windows network settings, select the "Private" profile to allow discovery.
Connection stability directly depends on the distance to the router and the presence of obstacles. If the signal is weak, the picture may become pixelated. In this case, it might be worth relocating the router or using a wired connection for your desktop computer.
Cast your screen using the Connect (Miracast) feature
The fastest way to display an image is to use the wireless display feature built into Windows 10 and 11. Technology Miracast Allows you to mirror your screen without using a router (Wi-Fi Direct mode) or through one. In this case, the TV acts as an external monitor.
To start working, press the button on the LG remote control Input or Smart and select the "Screen Share" or "Mobile" app. On some models, this can be done through the "Home" menu in the connected devices section. The TV will enter connection standby mode.
On your computer, press the key combination Win + KA "Connect" panel will appear on the right, where your TV should appear within a few seconds. After selecting the device, a confirmation prompt may appear on the TV screen, which you'll need to confirm with your remote.
☑️ Check before connecting Miracast
You can change the operating mode in the "Projection" menu. Options include: computer screen only, mirroring, extending the desktop, or using the TV as a second monitor. Mirroring or extending is most convenient for watching movies.
⚠️ Please note: When using Miracast through a router (instead of Wi-Fi Direct), the load on the Wi-Fi channel increases significantly, which can slow down the internet on other devices.
If you use Windows 11The interface may look slightly different, but the principle remains the same. There's also a "Projection" button in the quick settings, which performs the same function. Signal latency in this mode is minimal, but depends on the power of the wireless module.
Using the Connect to Device app in Windows
The Windows operating system has a separate component that turns a PC into a receiving device, but to transmit to an LG TV, we need the reverse function. However, for management purposes, the standard "Connect to Device" app (formerly Connect) is often used to reconnect to previously paired displays.
If automatic search doesn't work, you can use the classic method through system settings. Go to Settings → System → DisplayAt the bottom of the page, find the "Multiple Displays" section and click "Connect to a Wireless Display." This will open the same panel as the hotkeys.
Advanced users can perform diagnostics via the command line. By entering the command dxdiag and by saving the report, you can check the support Wi-Fi Direct video card and drivers. If the driver doesn't support this technology, wireless broadcasting is impossible.
- 🖥️ Update your graphics card and Wi-Fi adapter drivers to the latest version.
- ⚙️ In the projection settings, set the resolution to match the TV matrix (usually 1920x1080 or 3840x2160).
- 🔄 Restart the Windows Connection Manager service if errors occur.
A common issue is audio desynchronization. By default, sound may continue to play through your laptop's speakers. To fix this, click the speaker icon in the system tray and select your device from the list of playback devices. LG TV.
What should I do if there is no sound via HDMI/Wi-Fi?
If sound isn't transmitted, check your default playback device. Sometimes disabling audio enhancements in speaker properties or switching the sampling format in the advanced audio settings helps. Also, make sure your TV isn't set to "TV Only" in the audio settings.
Stream media via Smart Share and DLNA
If your goal is not to show the desktop, but to launch a movie or photo gallery, it is better to use the protocol DLNAIn the LG ecosystem, this feature is implemented through the Smart Share app (or simply "Photos & Videos" in newer versions of webOS). This reduces the load on the computer's processor.
In Windows 10 and 11, the media server feature is built into File Explorer. Open a folder containing videos or photos, right-click the file, and select "Cast to device." Select your TV from the list. Playback will begin automatically through the TV's built-in player.
For more flexible control, you can use a standard media stream. Search for "Media streaming settings" in Windows and enable this option. Your computer will become visible to all DLNA clients on the network, including LG, Sony, and Samsung TVs.
| Parameter | Miracast (Screen Casting) | DLNA (Smart Share) | Chrome Cast |
|---|---|---|---|
| Content type | Full screen, games, browser | Files (video, photos, music) | Browser tabs, YouTube |
| Delay | Medium/High | None (buffering) | Low |
| Control | From a computer | From the TV remote control | From a computer/phone |
| Energy consumption | High (GPU running) | Low | Average |
The advantage of DLNA is that after playing a file, the computer can be used for other tasks without fear of interrupting playback. The TV automatically buffers the stream. However, the subtitle formatting may differ from the original.
Working with the Google Chrome browser and Cast technologies
Many users prefer to watch content through a browser. Google Chrome has a built-in casting feature that works great with LG TVs that support Google Cast (or with built-in Chromecast). This is ideal for watching YouTube, Netflix, or web pages.
Open the Chrome browser on your computer. Click the three dots in the upper right corner and select "Cast...." The browser will scan the network and prompt you to select a device. You can cast a single tab, the entire desktop, or an audio tab.
If you have installed LG TV Plus or similar extensions, they can hijack control. For a clean connection, it's better to use the browser's native features. Image quality when casting a tab is often higher than with Miracast, as it uses hardware encoding.
- 🌐 To stream websites with protected content (DRM), use the "Stream Tab" method.
- 🔊 To stream only audio (for example, for music), select the "Stream audio" option.
- 📉 If you experience lag, reduce the video quality in the YouTube player to 1080p before broadcasting.
It's important to understand that streaming a tab consumes significant resources in your browser. If your computer is underpowered, the video may lag. In this case, it's better to use built-in apps on your Smart TV, if they support the required service.
⚠️ Note: WebOS (LG's operating system) interfaces are updated periodically. The location of the "Connection" or "Screen Share" menu may change depending on the firmware version. Please check your device's menu for the current paths.
Solving typical problems and diagnostics
Even with proper configuration, problems may still occur. Most often, the problem lies with third-party antivirus software (Kaspersky, ESET, Avast), which blocks local connections. Try temporarily disabling the firewall to test this hypothesis.
If the TV isn't found, try resetting the network settings. On a PC, this can be done with the command netsh winsock reset In the command prompt with administrator rights. On the TV, you can perform a "Quick Start" or completely unplug it from the power source for 1 minute.
Codec issues are also common. The TV may not recognize a file if it uses an uncommon compression format. In this case, DLNA won't help, and you'll have to either convert the video or use screencasting (Miracast), which transmits the image as is.
For diagnostics, use LG's built-in network tests. Go to Settings → Network → Wi-Fi Connection (or a similar path) and run a speed test. If the speed is below 20 Mbps, you won't be able to stream stable 4K video.
Final recommendations for optimization
For maximum enjoyment, LG Smart TV A dual-band router is recommended for use with a PC. A 5 GHz network connection provides the necessary bandwidth for 4K HDR content without compression artifacts.
Don't forget to keep your TV's firmware updated. New versions of webOS feature improved codecs and security protocols, which directly impacts compatibility with Windows 10/11. You can update your TV via the support menu in your TV settings.
Using the right streaming method saves time and hassle. For presentations and games, use Miracast, for archived movies, use DLNA, and for YouTube, use Chrome Cast. By combining these tools, you'll unlock the full potential of your multimedia system.
Why doesn't my LG TV see my computer in the list of devices?
Most often, the issue is with the Windows network profile. If the network is marked as "Public," the system is blocking discovery. Switch the profile to "Private" in Wi-Fi settings. Also, check if the SSDP Discovery service is enabled in Windows.
Is it possible to stream audio from a computer to a home theater via LG TV?
Yes, if the theater is connected to the TV via HDMI ARC or an optical cable. When you select the TV as the audio output device in Windows, the audio stream will be transmitted to the TV and then redistributed to the external speakers.
What is the minimum Wi-Fi speed required to stream Full HD?
For stable video transmission at 1920x1080 (Full HD) resolution, a connection speed of at least 15-20 Mbps is required. For 4K content, a channel speed of 50 Mbps or higher is recommended, preferably in the 5 GHz band.