Modern multimedia content requires large screens and high-quality sound, which makes the idea of using a TV as a monitor or media center extremely attractive. Connecting a computer to a TV via Wi-Fi router allows you to get rid of unnecessary wires while maintaining high-quality data transfer and connection stability. In the operating system Windows 10 This process is as automated as possible, but requires proper configuration of network equipment.
The main advantage of this method is the ability to broadcast digital files, photos, and videos directly from your PC's hard drive to the big screen without using flash drives or external storage. Furthermore, a wireless connection lets you control playback from the comfort of your couch, using your smartphone or laptop as a remote control. However, for a seamless experience, both devices must be on the same local network.
It is important to understand that the data transfer speed directly depends on the bandwidth of your router and the Wi-Fi standard it supports. If you plan to watch movies in 4K resolution or play games with low latency, make sure your equipment supports the standard. Wi-Fi 5 (802.11ac) or newer. Otherwise, delays or reduced image quality may occur.
Checking hardware and network compatibility
Before you begin setting up the software, you need to make sure your hardware is ready to use. The first critical requirement is that the computer and TV are on the same subnet. This means both devices must be connected to the same Wi-Fi routerIf you have a dual-band router, make sure your PC and TV are connected to the same frequency (either 2.4 GHz or 5 GHz), although modern routers often combine them into a single network.
The second aspect is the TV's support for technology DLNA or MiracastAlmost all modern Smart TVs have built-in modules for wireless data transmission. This may be referred to by different names in TV specifications: Wi-Fi Direct, Screen Share, AirPlay 2 (for Apple devices), or simply "Wireless Display."
⚠️ Please note: If your TV was released more than 10 years ago and does not have Smart functions, wireless connection via a router without using additional set-top boxes (for example, Chromecast or Android TV Box) will not be possible.
It's also worth checking your network profile in Windows. The operating system should recognize your network as "Private" and not "Public." Windows blocks the discovery of other devices on networks for security reasons, which will prevent the TV from being found.
- 📺 Make sure your Smart TV is turned on and connected to the same Wi-Fi network as your PC.
- 💻 Make sure network discovery is enabled on your computer in Windows settings.
- 🔄 Update your computer's Wi-Fi adapter drivers to the latest version.
- 📶 For 4K video transmission, the 5 GHz band is recommended.
Setting up network discovery in Windows 10
In order for your computer to be able to "see" your TV and other devices on the network, you need to configure the sharing settings correctly. Go to Control Panel → Network and Internet → Network and Sharing CenterIn the left part of the window, select "Change sharing settings."
In the window that opens, you'll see "Private" and "Guest or Public" profiles. You'll need to expand the "Private" tab and enable the option. Enable network discoveryIt's also recommended to check the "Turn on automatic configuration of connected network devices" box. This will allow Windows to automatically open the necessary ports in the firewall.
Next, go to the "All Networks" section at the bottom of the list. This is where a critical setting is located: Sharing public foldersIf you want to stream files from specific folders, make sure media streaming is enabled. Click the "Choose media streaming settings" link and ensure the status is "Enabled" and your TV is listed as an allowed device.
☑️ Windows network setup
After making changes, be sure to click the "Save Changes" button. Sometimes it takes a few seconds or even a system reboot for the new settings to take effect and be visible to other network members.
Broadcasting an image via the "Connection" function
The fastest way to display your Windows 10 desktop on your TV is to use the built-in wireless display feature. This technology is based on the standard Miracast, which allows you to stream video with minimal latency. To get started, press the key combination Win + K on the keyboard or go to Settings → System → Project to this PC (although we need the opposite action).
An easier way is to use the action bar. Click the notification icon in the lower-right corner of the taskbar (near the clock) and select the "Connect" tile. The system will begin searching for available wireless displays within range of your network.
When your TV's name appears in the list (for example, [LG] WebOS TV or Samsung TV), click on it. A permission request may appear on the TV screen—confirm it using the remote control. After this, your computer screen will be fully or partially displayed (in extension mode) on the TV.
| Parameter | Duplicate mode | Expand mode | Second Screen Only mode |
|---|---|---|---|
| Description | Same image on PC and TV | TV becomes an extension of the desktop | The PC screen goes blank, only the TV works |
| Usage | Presentations, photos, videos | Multitasking, work | Watching movies, playing games |
| Delay | Average | Low | Minimum |
Use hotkeys to switch between modes. Win + PThis will allow you to quickly adapt the image output to your current tasks without having to delve into the settings.
Setting up a DLNA media server to view files
If your goal is not to duplicate your desktop, but to watch movies stored on your computer's hard drive, the best solution is technology DLNAIt allows the TV to view computer folders as regular signal sources, such as a connected flash drive. This feature is built into Windows 10, but for advanced features (subtitles, artwork, metadata), it's best to use specialized software.
The standard method involves setting up folder access. Open File Explorer, find the movie folder, right-click, and select "Give access to → Specific people." Select "Everyone" or a specific user and grant access. However, the built-in Windows server often doesn't recognize complex subtitle or audio track formats.
It is recommended to install a third-party media server, for example, Plex, Universal Media Server or KodiThese programs automatically scan your hard drive, find media files, and upload posters, plot descriptions, and cast information. After installing the server on your PC, you simply need to download the corresponding app to your TV from its app store (Smart Hub, LG Content Store, etc.) and log in to the same account.
- 🎬 Install a media server (such as Plex) on your computer.
- 📂 Add movie folders to the server library.
- 📺 Download the client application to your Smart TV.
- 🔗 Log in to the TV app using the same account.
This approach provides the most comfortable user experience, turning a regular TV into a full-fledged cinema with easy navigation through the collection.
⚠️ Important: When using third-party media servers, ensure that Windows Firewall isn't blocking incoming connections for the new application. The program will typically ask for permission when you first launch it, but you'll need to confirm it.
Troubleshooting image issues and delays
A wireless connection, no matter how modern, is susceptible to external factors. The most common problem when connecting a TV to a PC via a router is audio and video desynchronization or a choppy picture. This almost always indicates insufficient channel bandwidth or interference from neighboring networks.
If you experience lag, try changing the display resolution on your computer. Lowering the frame rate from 60Hz to 30Hz or reducing the resolution to 1920×1080 This can significantly improve smoothness. It's also worth checking if there are any background downloads running on your computer that are consuming your bandwidth.
Another cause of problems may be outdated drivers. Go to Device Manager → Network Adapters, find your Wi-Fi module and check for driver updates. Sometimes, uninstalling the device and reinstalling it (with a reboot) helps clear configuration errors.
If your TV can't handle the video format when streaming from a PC, try using software transcoding, which is often built into media servers like Plex. The server will transcode the video on the fly into a format the TV can understand, taking over the workload.
Comparison of connection methods and final recommendations
The connection method you choose depends on your ultimate goals. If you need to show a presentation or run a game where responsiveness is important, use the Miracast (Projection). If you plan to watch a movie for a long time, it is better to set up DLNA-server, as it provides a more stable playback buffer and does not require constant activity of the computer screen.
It is also worth mentioning the technology Chromecast built-in, which is found on many modern TVs (Sony, Philips, TCL). In this case, you can use the Google Chrome browser on your PC: click the menu (three dots) → "Cast" and select your TV. This is an excellent compromise that doesn't require complex network setup.
Don't forget about security. When you share files or your screen, you make your device visible on the network. Make sure your Wi-Fi is protected with a strong password (WPA2/WPA3), and don't use the "Sharing" feature on public networks, such as in cafes or hotels.
Why can't the TV see the computer on the network?
The most common problem is with the Windows network profile. If the network is marked as "Public," the system hides the PC from other devices. Change the profile to "Private" in the network settings. Another cause is different subnets (for example, one device on 2.4 GHz, the other on 5 GHz, with client isolation enabled on the router).
Can you play games on TV via Wi-Fi?
Yes, but with limitations. For fast-paced shooters, input lag over Wi-Fi can be critical. For turn-based strategy games, card games, or leisurely RPGs, connecting via a router is perfectly acceptable, especially if the 5 GHz band is used and the router supports the Wi-Fi 6 standard.
Does connecting a TV affect internet speed?
Local file transfers (DLNA) don't use the internet; traffic is handled within the router. However, streaming (YouTube, Netflix) or using Chromecast from a browser tab actively uses the internet connection. If the connection is limited, speeds on other devices may drop.
How to improve picture quality over a wireless connection?
In your TV settings, find the "Game" or "PC" picture mode to disable unnecessary post-processing that adds lag. On your computer, in the graphics settings, make sure scaling is set to 100% or the recommended value to prevent blurry fonts.