Modern multimedia systems allow you to stream content from a laptop or PC to a large screen without unnecessary wires. Windows 10 users often look for a way to display images on the panel. Smart TV from LG for watching movies or presentations. The standard Miracast protocol built into the system ensures stable high-definition video streaming.
The process of synchronizing devices has become significantly easier with the release of the latest OS updates. You won't need to purchase additional adapters if both devices support Wi-Fi Direct wireless technology. However, despite the simple interface, there are some setup nuances that affect image quality and latency.
In this article, we'll take a detailed look at the steps needed to establish a successful connection. We'll cover standard Windows tools, proprietary LG utilities, and network diagnostic methods. We'll also cover traffic optimization to minimize lag while gaming or watching fast-paced content.
Technical requirements and equipment preparation
Before setting up, you need to ensure your hardware meets the minimum requirements for wireless display technology. A key requirement is a Wi-Fi module in your computer that supports access point or direct connection mode. Modules built into the motherboard of modern laptops typically support this feature, but older USB dongles may not support the required standard.
TV LG Smart TV Your TV must support Miracast technology or have a built-in Screen Share feature. Most models released after 2014 already have the necessary software. It's important to update your TV's software to the latest version available for your model, as older firmware may contain connection protocol errors.
Both devices must be on the same local network. This means the laptop and TV are connected to the same router. If you're using a guest network or isolated VLANs at the corporate level, the connection may fail due to network security rules.
☑️ Checking connection readiness
It's worth paying attention to the frequency range of your wireless network. To transmit video in the resolution Full HD or 4K The use of a range is highly recommended 5 GHz. Range 2.4 GHz It is often overloaded with neighboring routers and microwave ovens, which leads to artifacts on the screen.
Setting up an LG TV to receive a signal
The first step is to properly configure the receiving device. LG TV remote controls usually have a button labeled Input or the image of a square with an arrow. Clicking it will take you to the signal source selection menu, where you need to find the app. Screen Share or Smart Share.
After launching the app, the TV will enter connection standby mode. A message may appear on the screen indicating that the device is ready for pairing, along with its name, which will be visible in the list of available displays on your computer. Some models require manual connection authorization in the privacy settings.
⚠️ Note: On some LG models, this feature may be called "Mobile TV" or "Device Connector." If the standard search doesn't yield results, check the list of apps on your TV or consult the manual for your model.
Automatic detection is also possible via the proprietary platform. If you have webOS installed, make sure external control is enabled in your network settings. This will allow your computer to not only stream images but also use the TV remote as a mouse in certain scenarios.
What to do if the TV does not see the network?
Make sure AP Isolation isn't enabled in your router settings. This feature prevents devices on the same network from seeing each other, which prevents Miracast from working. Also, try temporarily disabling your PC's antivirus firewall.
For owners of older models without built-in Smart TV, there is the option of connecting via external set-top boxes, but for the purposes of this guide, we'll focus on native Wi-Fi capabilities. The quality of the TV's signal reception also depends on the router's location; too great a distance can lead to connection interruptions.
Starting a broadcast using Windows 10 system tools
The Windows 10 operating system has a built-in projection mechanism that doesn't require any third-party software. The fastest way to activate the display search is to use a hotkey. Press the combination Win + K on your keyboard. A "Connect" sidebar will appear on the right, which will begin scanning the airwaves.
If the keyboard shortcut doesn't work, you can use the Action Center. Click the dialog box icon in the lower-right corner of the taskbar or use the shortcut Win + AFind the "Project" button among the quick access tiles. If it's not on the first page, click "Expand."
Your LG TV should appear in the list that opens, with the prefix [Wireless] or simply the model name. Click it, and the system will begin pairing. The initial pairing may take 5 to 15 seconds. A confirmation prompt may appear on the TV screen, which you'll need to accept using the remote.
| Opening hours | Description | When to use |
|---|---|---|
| PC screen only | Image only on monitor | To maintain confidentiality |
| Recurring | Same picture on PC and TV | For presentations and photo demonstrations |
| Expand | TV becomes a second monitor | To work with multiple windows |
| Second screen only | The PC monitor goes dark, only the TV works | To watch movies in high quality |
After successful connection, you can control the display mode through the menu. System → DisplayOrientation and scale settings are available here. Please note that your TV's resolution may automatically adjust to its native settings, for example 3840x2160 for 4K models.
Using the LG TV Plus app and alternatives
LG offers its own software to improve interaction between devices. The application LG TV Plus (formerly known as LG Smart View) is available for download in the Microsoft Store. It offers more flexible settings, allowing you to not only mirror your screen but also stream individual media files.
To use the app, you need to install it on your computer and ensure the corresponding service is running on your TV. Once launched, the program will scan the network and offer a list of available devices. The interface allows you to control video playback and photo gallery with a more convenient preview than standard Windows tools.
An alternative option is to use a browser Google ChromeThere's a "Cast" feature in the browser settings menu. It allows you to cast a single tab or the entire desktop to your TV if it supports the Chromecast built-in protocol, which is relevant for newer LG models with webOS 3.5 and above.
⚠️ Note: Using third-party apps may increase processor load. If you notice significant system sluggishness, close unnecessary background programs before starting the broadcast.
Another option is to use media players such as VLCIn the "Playback" menu, select "Renderer," where your TV should be displayed. This method is ideal if you want to view a video file rather than mirror your entire desktop, as it ensures better audio and video synchronization.
Network optimization and latency elimination
Wireless video transmission requires high bandwidth. If you experience audio and video out of sync or a blocky image, the problem lies with the data transfer speed. First, check whether the bandwidth is being occupied by downloading large files or updating games on other devices.
The distance between the router and the devices is critical. Walls, especially load-bearing ones with reinforcement, significantly weaken the signal. 5 GHzTry to position the router so that it is within direct line of sight or one partition away from the viewing area.
It's also worth checking the power-saving settings of your laptop's Wi-Fi adapter. Find your network adapter in Device Manager, go to Properties, and under the "Power Management" tab, uncheck the box next to Allow the device to turn off. This will prevent short-term connection interruptions to save power.
If using a range 5 GHz It is impossible due to a weak signal, try lowering the output resolution on your computer. Switching from 4K on 1080p (Full HD) will significantly reduce the amount of data transferred and may eliminate lag. This can be done in the screen resolution settings before starting the broadcast.
Troubleshooting and Frequently Asked Questions
Despite standardized technologies, users may encounter various errors. If the TV doesn't appear in the list of available devices, try resetting the Wi-Fi module on both devices. Temporarily disabling and re-enabling the wireless adapter in the Network and Sharing Center often helps.
Problems with your graphics card drivers can also block the projection function. Make sure you have the latest drivers installed. NVIDIA, AMD or Intel HD GraphicsIn some cases, the Miracast feature disappears after a Windows update, and it can only be restored by reinstalling the chipset driver.
Below are answers to the most frequently asked questions when setting up the system.
Why is there no sound on the TV when connected?
By default, sound may continue to play through your laptop's speakers. Click the speaker icon in the Windows system tray, select the playback device, and switch to your LG TV (often labeled as an Intel SST or the TV model name).
Is it possible to play games over a Wi-Fi connection?
For fast-paced shooters and racing games, input lag over Wi-Fi will be too high, making gaming uncomfortable. The connection is fine for strategy or card games, but for the best experience, use an HDMI cable.
The TV says "Invalid format" when connecting.
This means there's a refresh rate or resolution mismatch. Go to "Advanced display settings" in Windows and try changing the screen refresh rate to 60 Hz or 50 Hz, and also change the color depth to 8 bits.
How to disable screen mirroring?
Press again Win + K and select "Disable" from the menu that appears. Alternatively, use Win + P and select the "PC screen only" mode.
Does my laptop support Miracast?
Open command prompt (cmd) and enter the command netsh wlan show driverIn the list of options, find the line "Hosted network supported." If it says "Yes," then it's technically possible, but a driver update may be required.