Modern Smart TV They've become powerful multimedia centers, capable of not only receiving broadcast channels but also displaying content from external devices. The question of how to display an image from a laptop to an LG TV via Wi-Fi becomes especially relevant when you need to show a presentation to colleagues, watch a movie on the big screen, or simply share vacation photos. Using wireless technology eliminates the need to run HDMI cables across the room and provides flexibility in equipment placement.
LG has implemented support for several multimedia transmission standards in its TVs, which allows you to connect both devices based on Windows, and computers MacBookThe main protocols here are Miracast (implemented as Screen Share), DLNA, and AirPlay 2. The choice of a specific method depends on your computer's operating system version, TV model, and desired image quality. A wireless connection requires a stable router, as transmitting a high-definition video stream is difficult. 1920×1080 or 3840×2160 creates a significant load on the local network.
Before setting up, make sure both devices—the laptop and the TV—are connected to the same wireless network. This is a fundamental requirement for most streaming technologies to work. If you're using a guest Wi-Fi network or splitting the 2.4 GHz and 5 GHz bands without SSID aggregation, the devices may simply not "see" each other. On some corporate networks, streaming may be blocked by the administrator.
⚠️ Attention: If your router supports dual-band mode, it is highly recommended to connect both your laptop and TV to the 5 GHz network. This will ensure higher throughput and reduce video streaming latency, which is critical for watching 4K movies.
Preparing equipment and checking the network
The first step is to diagnose the current network status. Even if the internet on your laptop is fast, this doesn't guarantee that the local network is configured correctly for data exchange between devices. It's important to check the IP addresses: they should be in the same subnet, for example, 192.168.1.5 And 192.168.1.10If the addresses are very different (for example, 192.168.0.x And 192.168.1.x), this means that the devices are in different network segments and will not be able to connect.
It is also worth making sure that the current firmware version is installed on the LG TV. webOSOlder software versions may contain bugs in the wireless module or may not support the latest video compression codecs. Updates usually occur automatically, but it's best to check the status manually through the menu. Settings → All settings → Support → Software update.
- 📡 Make sure your laptop and TV are within range of the router's signal.
- 🔄 Make sure that Wi-Fi is enabled on both devices.
- 🔐 Make sure the network type on your laptop is set to "Private" and not "Public."
Power saving is an important consideration. Some laptop network adapters may go into sleep mode to conserve battery power, which can lead to connection drops during streaming. In Windows Device Manager, disable power-off for the USB root or wireless adapter.
Screen Sharing via Miracast (Screen Share)
The most universal way to display an image from a laptop to an LG TV is using Miracast technology. On LG TVs, this feature is often called Screen ShareIt allows you to completely mirror your computer desktop onto your TV screen without the need for additional applications, as the technology is built directly into the Windows 8.1, 10, and 11 operating systems.
To start using the LG TV remote control, press the button Input or go to the launcher and select the application Screen Share (or "Screen Casting"). Once launched, the TV will go into connection standby mode. On a Windows computer, you need to press the key combination Win + KA "Connection" panel will appear on the right side of the screen, where your TV should be displayed.
⚠️ Attention: When connecting for the first time, a confirmation prompt may appear on the TV screen. Be sure to approach the TV and press "Accept" on the remote, otherwise the laptop will not be able to establish a connection.
If the automatic search doesn't yield results, try resetting the network settings on your TV or rebooting your router. Disabling your antivirus or firewall during setup can sometimes help, as they can block ports required for the Miracast protocol. It's also worth checking that device discovery is enabled in Windows network settings.
Image quality when using Miracast directly depends on the strength of the Wi-Fi signal. If you notice artifacts, stuttering, or image delamination, try moving your laptop closer to the router or lowering the screen resolution in Windows settings before connecting.
Using DLNA to play media files
If your goal is not to duplicate your desktop, but to watch movies, photos or listen to music stored on your laptop's hard drive, then the technology DLNA (Digital Living Network Alliance) is ideal. Unlike Miracast, DLNA doesn't burden the laptop's processor by encoding the video stream in real time, but simply transfers the file for playback on the TV.
To implement this method in Windows 10 and 11, use the built-in "Media Streaming" feature. Open "Settings" → "Network & Internet" → "Status" → "Media Streaming Settings." Here, enable streaming and select your LG TV from the list of available devices.
Once set up, you can simply right-click the video file on your laptop, select "Cast to Device," and select your TV. The file will open on the big screen, and the playback control window will appear on your computer.
- 🎬 Supports video, audio and image transmission.
- 💻 Doesn't block your laptop—you can work with other programs.
- 📂 Allows you to stream content from the Video, Music, and Pictures folders.
It's important to note that DLNA doesn't support all file formats. If your LG TV can't play a file, there's likely a problem with the codec or container. In this case, installing a third-party media server, such as Plex or Kodi, which will take over the transcoding of the stream on the fly.
Why is DLNA better for movies?
DLNA uses the TV's CPU to decode video, while Miracast encodes images on the fly using the laptop's CPU, which can cause heat and fan noise.
Stream from your MacBook using AirPlay 2
Apple device owners are even luckier: modern LG TVs support the technology AirPlay 2 Natively. This allows you to stream your MacBook or iPhone screen to an LG TV via Wi-Fi without purchasing an additional Apple TV box. This feature is stable and provides high picture quality.
To start streaming, make sure your LG TV is a 2019 model or newer (OLED, NanoCell, UHD series), which supports AirPlay 2. You need to allow the connection on your TV: go to Settings → Support → AirPlay and make sure the feature is enabled. You can set it to require a password or allow the connection automatically upon first connection.
On your MacBook, click the Control Center icon in the menu bar (or the monitor icon in older versions of macOS) and select "Mirror Screen." Select your LG TV from the list. Your desktop image will instantly appear on the big screen.
⚠️ Attention: If you're using macOS Catalina or earlier, AirPlay 2 support may be limited. In such cases, you may need to install third-party AirPlay emulator apps directly on your LG TV via the LG Content Store.
The advantage of AirPlay 2 is the ability to use your TV as a separate audio device or monitor, as well as support for multi-room audio. You can stream music to your TV while continuing to work on your laptop, or display video full-screen while minimizing other windows.
Setting up via the LG TV Plus app
For deeper control over your TV and expanded streaming capabilities, LG offers an official app LG TV PlusIt's available for Windows, Android, and iOS. While its primary function is remote control from a phone or tablet, it also allows you to stream photos and videos from your mobile device to your TV screen.
For use with a laptop (Windows), the app's functionality may be limited compared to the mobile versions, but it's useful for initial network setup and connection testing. If standard methods don't work, installing the official software can help diagnose the problem or update the TV's firmware via a PC.
In some cases, users prefer to use universal translator programs such as LetsView or AirServer, installing them on a laptop. These programs emulate an AirPlay or Miracast receiver, allowing for more flexible stream quality and latency settings, but they often require client installation on the TV, which isn't always convenient.
- 📱 Allows you to control your TV from your smartphone.
- 🖼️ A convenient gallery for displaying photos from a mobile device.
- ⚙️ Helps fine-tune TV network settings.
Using third-party apps is justified if the TV's built-in features don't work correctly or require advanced functionality, such as broadcasting sound only to an external speaker system connected to the TV, bypassing the laptop speakers.
Troubleshooting and Compatibility Chart
Despite the simplicity of the technology, users often encounter difficulties: the TV isn't visible in the device list, the connection keeps dropping, or there's no sound. Most often, the problem lies in the Windows Firewall settings, which block incoming connections. A rule needs to be added for "Private Networks" to allow device discovery.
It's also worth checking your laptop's wireless adapter drivers. Outdated drivers may not work correctly with modern Wi-Fi encryption standards (WPA3). Update the drivers through Device Manager or the laptop manufacturer's website.
Below is a table to help you choose the best connection method based on your situation:
| Method | Laptop OS | Quality | Delay | Purpose |
|---|---|---|---|---|
| Miracast | Windows 10/11 | High | Average | Presentations, photos |
| AirPlay 2 | macOS, iOS | Very high | Low | Movies, games, work |
| DLNA | Any | Maximum | Absent | Viewing video files |
| Chrome Cast | Any (browser) | Depends on the network | High | Web pages, YouTube |
| This information is relevant for LG webOS 4.0 and later models. | ||||
If none of the wireless methods provide stable results, your router may be overloaded or have low throughput. In this case, consider using a wired connection or upgrading your network equipment.
☑️ Diagnosing connection problems
Frequently Asked Questions (FAQ)
Why isn't my LG TV showing up in the list of available devices on my laptop?
Most likely, the devices are connected to different networks (for example, one to the guest network and one to the main network) or are using split 2.4/5 GHz frequencies. Also, check if Windows Firewall is blocking device discovery. Make sure the Screen Share app is open on the TV.
Is it possible to stream audio only to the TV, leaving the image on the laptop?
Yes, in Windows 10 and 11, this can be done through the sound settings. Click the speaker icon in the system tray, select the output device, and find your LG TV in the list. The sound will go through the TV speakers, and the image will remain on the laptop screen.
How to reduce lag during wireless streaming?
To reduce latency, use a 5 GHz network, turn off other devices that actively consume bandwidth (torrents, downloads), and move your laptop closer to the router. In LG TV gaming mode, it's also a good idea to disable all image post-processing.
Do older LG TVs (pre-2018) support AirPlay?
Older models don't support AirPlay 2 natively. However, if your TV supports DLNA, you can stream video files from your Mac, but not the entire screen. For full AirPlay functionality, you'll need an Apple TV or similar set-top box.