Modern technologies allow you to transform your laptop into a powerful multimedia center, broadcasting images to a large TV screen. This is especially important for owners of smart TVs. LG Smart TV, which support a wide range of wireless protocols. You no longer need to search for long HDMI cables or run wires across the room to watch a movie online or share a presentation with colleagues.
The process of syncing devices has become incredibly simple and takes just a few minutes if you know the correct steps. In this article, we'll cover all available connection methods in detail: from built-in Windows and macOS features to specialized apps. You'll learn how to set up Miracast to duplicate the screen or use technology DLNA for streaming files.
Before you begin setup, make sure your router is stable, as the quality of the wireless signal directly impacts video smoothness. It's also important that both devices—the computer and the TV—are on the same local network. If you're using a guest WiFi network or a heavily used 2.4 GHz band, you may experience lag or audio desync.
⚠️ Important: Make sure your router does not have the "AP Isolation" feature enabled, which prevents devices on the network from seeing each other, making wireless connectivity impossible.
Checking compatibility and preparing the network
The first step should always be to diagnose the current state of the equipment. Most modern TVs LG, released after 2014, already have built-in support for the standard Wi-Fi Direct and protocol MiracastHowever, older models may require the installation of additional software or the use of external adapters.
You need to check the operating system version on your laptop. Windows 10 and 11 are the most popular versions, which have native support for wireless displays. For users macOS You're even luckier because many new LG TV models come with built-in support. AirPlay 2, which allows you to broadcast your screen without installing any extra programs.
- 📶 Make sure your laptop and TV are connected to the same WiFi network (SSID name must match).
- 🔄 Check for firmware updates on your TV using the menu
Settings → All settings → Support → Software update. - 💻 On your computer, make sure the WiFi adapter drivers are installed and working correctly.
- 🔌 If you are using a dual-band router, it is advisable to connect both devices to the 5 GHz network for better throughput.
It's worth noting that wireless data transfer speed is limited by your router's bandwidth. If you plan to stream 4K video, make sure your router supports the standard. 802.11ac or newer. Otherwise, the image may slow down or its quality may deteriorate.
Using LG's built-in Screen Share feature
The easiest and fastest way to display an image is to use the TV's native function, which is often called Screen Share or Wireless DisplayThis method is based on Miracast technology and does not require installing additional software on a Windows computer.
To start activation, take the remote control and press the button Input or go to the launcher's main menu. Select the app from the list of signal sources. Screen ShareA waiting-for-connection message will appear on the screen, and the TV will begin broadcasting its ID, making it visible to the laptop's search engines.
On the laptop side with the Windows operating system, you need to do the following: press the key combination Win + KThe "Connection" panel will open on the right, where your TV should appear in a few seconds. LGClick on it and the system will attempt to establish a secure connection.
☑️ Set up Screen Share
Once the connection is successful, you can select the operating mode. Typically, two options are available: "Duplicate," which copies the laptop's entire screen to the TV, and "Extend," which turns the TV into a second monitor. For watching videos, it's best to choose the first option, and for working with documents, the second.
⚠️ Note: When connecting for the first time, a confirmation request may appear on the TV screen. You must allow the connection using the remote control, otherwise the connection will not be established.
Setting up DLNA for streaming media files
If your goal is not to duplicate your desktop, but to play movies, photos or music stored on your laptop's hard drive, then the technology DLNA It's perfect. It allows the TV to see your computer's shared folders as external drives.
In Windows, this feature is called "Streaming Media." To enable it, open the "Control Panel" and find the "Network and Sharing Center" section. Select "Streaming Media Settings" from the left menu.
In the window that opens, click "Enable media streaming." The system will display a list of available devices on the network. Find your TV in the list. LG Smart TV and make sure the "Allowed" box is checked. After that, you can close the settings windows.
| Parameter | Default value | Recommended value |
|---|---|---|
| Protocol | DLNA / UPnP | DLNA / UPnP |
| Access port | Dynamic | Fixed (in firewall) |
| Video formats | MP4, MKV, AVI | MP4 (H.264) |
| Stream quality | Automatically | High (at 5 GHz) |
Now open the app on your TV Photos and videos or Smart ShareIn the list of sources, select your computer. You'll see folders that are shared by default (usually "Videos," "Pictures," and "Music"). To add other folders, right-click them in File Explorer, select "Properties" → the "Sharing" tab, and share them.
What should I do if the TV doesn't see the folders?
If your TV doesn't display shared folders, check your network type in Windows. The network should be marked as "Private," not "Public." Windows blocks device discovery on public networks for security reasons. You can change the network type in Windows Settings → Network & Internet → Connection properties.
AirPlay 2 streaming for macOS users
Laptop owners MacBook can enjoy the Apple ecosystem using built-in support AirPlay 2 in LG TVs. This technology ensures minimal latency and high picture quality, which is critical for viewing dynamic content.
Check your TV model. AirPlay 2 support is available on OLED, NanoCell, and UHD models released in 2019 and later. If you have an older model, unfortunately, this method won't work without purchasing an Apple TV set-top box.
To connect, make sure Bluetooth and WiFi are enabled on both devices. In the macOS control panel (upper right corner), click the Control Center icon and select Screen Mirroring. Select your TV from the list. LG.
When you first connect, a four-digit code will appear on your TV screen. Enter it on your laptop to confirm the pairing. After that, your Mac's screen will be mirrored to the big screen. You can choose between "Built-in Display" (showing the picture only on the TV) or "Primary Display" (mirroring).
Third-party programs for advanced features
The built-in tools are great, but sometimes their functionality isn't enough. For example, if you need to stream a Chrome browser tab or use specific codecs, third-party solutions come to the rescue.
One of the most popular programs is LetsView or ApowerMirrorThey can be installed on both your computer and your TV (via the LG Content Store). These apps allow you to control your computer with a remote, stream audio separately, and even draw on the screen.
Another option is to use a browser Google ChromeOpen the menu (the three dots in the corner) and select "Cast." The browser will search for built-in or external Chromecast devices. If your LG TV supports Chromecast, you can cast a tab or the entire desktop directly from the browser.
There is a program for advanced users OBS StudioIt allows you to create complex scenes, add a webcam, titles, and broadcast the stream to a TV via a local server or virtual camera. This requires some setup, but provides maximum control over the image.
⚠️ Note: Installing third-party apps on your TV can reduce its performance because they consume RAM. If your TV interface starts to sluggish, close unused apps running in the background.
Troubleshooting connection and latency issues
Even with proper setup, problems can still arise. The most common ones are audio and video desynchronization or image freezing. This is almost always due to an unstable WiFi signal or channel congestion.
Try moving your router closer to your TV or laptop. Walls, mirrors, and household appliances (especially microwaves) can cause significant interference in the 2.4 GHz band. Switching frequency 5 GHz often solves the problem of delays.
If you see a picture but no sound, check your playback settings. In Windows, click the speaker icon in the system tray and select your TV from the list of output devices. LGSometimes the system continues to output sound to the laptop speakers by default.
- 🛑 Restart your router if your data transfer speed has dropped.
- 🔌 Disable the VPN on your laptop, as it may block local device discovery.
- 📉 Reduce the resolution of the broadcast image in the display settings if the channel is overloaded.
- 🔋 Make sure your laptop hasn't entered power saving mode, which disables the WiFi adapter.
Why doesn't my LG TV detect my laptop?
Most often, the problem lies in different networks. Make sure the devices aren't on different frequencies (guest network) or VLANs. Also, check whether your antivirus or Windows Firewall is blocking incoming connections.
Is it possible to connect a laptop to an old LG TV without Smart TV?
Without Smart TV, you can't connect your laptop directly via WiFi, as the TV doesn't have a signal receiver. You'll need an external set-top box (TV box) with Miracast or Chromecast support, which connects via HDMI.
How to improve picture quality over a wireless connection?
Use a Wi-Fi 6 (802.11ax) router, connect your devices to a 5 GHz network, and make sure your laptop isn't doing heavy tasks (like downloading torrents) that could clog up the channel.