Modern televisions LG Smart TV Laptops have evolved into full-fledged multimedia centers, capable of displaying content not only from built-in applications but also from external devices. Users often look for a way to display their laptop's content on a larger screen to watch movies, presentations, or photos in high quality without the hassle of wires. Wireless data transfer technology makes this possible quickly, using only a home network. WiFi.
The connection process may vary depending on your computer's operating system and TV firmware version. There are native features in Windows and macOS, as well as third-party solutions for more specific tasks. It's important to understand that connection stability directly depends on the router's signal quality and channel congestion.
In this guide, we will cover all current synchronization methods, including standard protocols. Miracast And DLNAWe'll also cover the nuances of working with different browsers. You'll learn how to avoid image lag and which router settings can affect streaming quality. Follow the instructions to enjoy content on the big screen without compromise.
Network requirements and equipment preparation
The first and most critical condition for successful streaming is that all devices are on the same local network. This means both the laptop and the TV. LG WebOS must be connected to the same router. If you have a dual-band router, it is advisable for both devices to operate on the same frequency. 5 GHz, as it provides higher bandwidth for video transmission.
Please check your TV's software version. Manufacturers regularly release updates that improve the module's stability. WiFi and add support for new codecs. You can check the version in the section Settings → All settings → General → About TVIf an update is available, it is best to install it before starting setup.
It's also worth making sure that AP Isolation isn't enabled on your router, which prevents devices from seeing each other on the network. This feature is often enabled on guest networks for security, but it completely blocks the ability to stream video from your computer to your TV.
⚠️ Attention: If your router broadcasts two different networks (for example, "Home_2.4" and "Home_5G"), make sure your laptop and TV are connected to the same one. Being on different subnets can make the devices invisible to each other.
You can use built-in tools to diagnose signal quality. On your LG TV, go to Settings → Network → WiFi Connection and check the signal strength. If it's weak, try moving the router closer or using a wired connection for the TV, if possible, while leaving your laptop on WiFi.
Mirroring your screen in Windows 10 and 11 using Miracast
Microsoft operating systems have built-in support for the technology. Miracast, which allows you to share your screen image without installing additional software. LG TVs support this feature, called "Screen Share." To get started, press the "Input" or "Input Select" button on the remote control and select the app. Screen Share or "Connect to a wireless network".
On a Windows 10 or 11 computer, use hotkeys Win + KThe "Connection" panel will appear on the right, where the system will begin searching for available displays. Find your LG TV (usually called [LG] webOS TV) in the list and click it. After confirming on the TV screen (if required), the desktop image will appear on the TV.
- 📺 Second screen only: the image will only be on the TV, the laptop screen will go dark.
- 💻 Duplicate screen: the image is duplicated on both devices (standard mode).
- 🖥️ Expand: The TV will become a second monitor, you can drag windows between screens.
- 🚫 Disable: termination of broadcast.
If the system reports "Projection not supported," your graphics card driver may be outdated or your WiFi adapter may not support Wi-Fi Direct. In this case, update your drivers through Device Manager or the laptop manufacturer's website. Also, make sure the "WLAN AutoConfig" service is running in Windows.
It's important to note that using Miracast puts a strain on the WiFi module. If you plan to stream 4K video, make sure your router supports the standard. 802.11ac or newer. Otherwise, the image may flicker.
Using DLNA to play media
Unlike Miracast, which broadcasts the entire screen, the protocol DLNA (Digital Living Network Alliance) is designed for transferring specific media files: videos, music, and photos. The LG TV treats the laptop as a media server. This is a great way to watch a downloaded movie in high bitrate without loading the computer's processor with image rendering.
In Windows, this feature is implemented through "Streaming Media Settings." Open Control Panel, find "Streaming Media Settings," and enable this option. Select your LG TV from the list of devices and allow access. After this, the "Cast to device" icon will appear on video files in Windows Explorer.
For more advanced management of your media library, it is recommended to use specialized software, for example, DLNA Server or built-in player VLCIn VLC, you need to go to the menu View → Playlists → Universal Plug-and-Play Interface, then drag the file into the list and click "Play", selecting the TV.
| Parameter | Miracast (Screen Casting) | DLNA (Media Server) |
|---|---|---|
| Content type | Full screen, browser, games | Only video, photo, audio |
| Control | From a laptop (mouse/keyboard) | From a TV remote or laptop |
| Delay | May be noticeable | None (buffering) |
| Background mode | Only the active window works | You can work in other programs |
The advantage of DLNA is that the TV decodes the video stream automatically if the file format is supported. If the format isn't supported by the TV but the laptop does, it's better to use screencasting or convert the file in advance.
Connecting MacBook and Apple devices (AirPlay 2)
Owners of Apple technology are the luckiest of all, as modern LG TVs are equipped with support for the technology AirPlay 2This allows you to mirror your MacBook, iPhone, or iPad's screen or video natively, without installing any apps on your TV. Make sure AirPlay is enabled on your TV in the "Connect to a Mobile Device" menu.
To start casting on macOS, click the "Control Center" icon in the menu bar and select "Screen Mirroring." Select your LG TV from the list. The system may prompt you for a code that will appear on the TV screen—enter it on your computer. Your laptop screen will now be mirrored to the TV with minimal delay.
If you simply want to display a video from the Safari browser or QuickTime player, use the "AirPlay" button directly in the program interface. This is often more convenient, as it allows you to minimize the browser and continue working while the video plays on the TV. Image quality when using AirPlay 2 is typically higher than with Miracast, thanks to Apple's optimized codecs.
In some cases, users encounter an issue where their MacBook doesn't detect their TV. Try restarting your router and ensure that VPN services, which can hide the device's real IP address on the local network, are disabled on both devices.
Broadcasting via Google Chrome browser
If built-in Windows tools are unstable, a great alternative solution is a browser. Google ChromeIt has a built-in Cast function, which is powered by Chromecast technology. This is especially useful if you want to share the contents of a tab or the entire desktop.
Open the Chrome browser on your laptop, click the three dots in the upper right corner, and select "Save & Share" → "Cast..." (or simply "Cast"). In the window that appears, select the source: "Tab," "Full Screen," or "File." Then click the name of your LG TV.
This method is convenient because it doesn't depend on the Windows version and works even on older laptops that don't support Miracast hardware. However, casting the entire screen via a browser can put additional strain on the processor, leading to a drop in FPS in games or videos.
- 🌐 Broadcast tab: Ideal for YouTube, online cinemas and presentations.
- 🖥️ Screencast: shows everything that happens on the monitor, including notifications.
- 📁 File broadcast: Allows you to open a local video file directly in your browser and send it to TV.
⚠️ Attention: When casting via Chrome, audio may default to your laptop. To switch audio to your TV, right-click the Chrome tab and select "Cast," then make sure "Cast audio" is checked.
Third-party applications and troubleshooting
When standard methods fail or require advanced functionality (for example, streaming system audio via DLNA), third-party programs come to the rescue. One of the most popular solutions is LetsView or AirServerThey are installed on both the PC and the TV (via the LG Content Store), ensuring a stable connection.
A common issue is audio and video desynchronization. This can be resolved by increasing the playback buffer in the player settings or reducing the broadcast quality in the Windows "Projection" menu. It's also worth checking whether your router has speed limits (QoS) for certain devices.
If your TV stops detecting your laptop after updating your router, try statically assigning IP addresses to both devices in the router settings. This will help avoid addressing conflicts when the DHCP server assigns new addresses after a reboot.
☑️ Connection diagnostic checklist
In rare cases, your antivirus or Windows Firewall may block incoming connections for broadcasting. Try temporarily disabling network protection or adding the "Projecting to This PC" app to your firewall exception list.
Why does the picture lag during broadcasting?
Lag is most often caused by WiFi congestion from neighbors or physical obstacles (walls, mirrors). Try switching to channel 1, 6, or 11 in your router settings if you're using 2.4 GHz.
Comparison of methods and final recommendations
The choice of connection method depends on your goals. For sharing presentations or working, Miracast or AirPlay are best, as they provide interactivity. For watching high-quality downloaded movies, DLNA is ideal, guaranteeing smooth, tear-free playback.
Don't forget about a wired HDMI connection if your wireless network is congested. However, if you value freedom of movement and minimalism, setting up a WiFi streaming solution will save you a lot of time in the future. Modern LG TVs with Alpha processors provide fairly high processing speeds for incoming video streams.
Please remember that software is constantly being updated. Menu interfaces may change, and features may be improved. Always check for new firmware versions for your TV in the official support section to ensure you have access to data transfer technologies.
Why doesn't my LG TV detect my laptop?
Most often, the problem stems from different subnets (for example, one device on 2.4 GHz and another on 5 GHz, with separate networks) or client isolation enabled on the router. Also, check if your antivirus software is blocking network discovery.
Is it possible to stream audio separately?
Yes, in Windows 10/11, after connecting, you can click the sound icon in the system tray and select the TV as the default output device. In Chrome, this is done through the tab menu.
Does broadcasting affect internet speed?
Using DLNA or local streaming (Miracast/AirPlay) doesn't use up your internet connection; traffic is handled within the local network. However, if you stream online video (YouTube via a browser), your internet connection is fully consumed.
How to reduce lag during broadcasting?
Use the 5 GHz frequency, move the router closer to your devices, close background downloads on your laptop, and select "Game" or "PC" mode in your TV's picture settings to minimize post-processing.