Modern technologies allow you to completely do away with bulky cables, turning your living room into a true multimedia center. Connecting a TV to a computer Wirelessly access vast archives of movies, photos, and music stored on your PC's hard drive. This solution is ideal for viewing content on a big screen without the need to transfer files or use external drives.
To implement this task, your device will need Wi-Fi adapter, which can be built-in or external (USB). The main requirement is that both devices must be on the same local network to ensure stable, high-speed data transfer. In this article, we'll cover all current connection methods, from standard protocols to specialized software.
Before you begin, make sure your router supports the standards 802.11n or newer, as older Wi-Fi versions may not provide sufficient bandwidth to stream 4K video. If you are using an external adapter, it is recommended to install it in the port USB 3.0 for maximum performance.
Hardware and software requirements
Successful device synchronization depends not only on the availability of a Wi-Fi module, but also on the compatibility of software platforms. On the computer side, the operating system is most often used. Windows 10/11, which has built-in tools for working with multimedia. The TV, in turn, must support the technologies Smart TV or have a built-in receiver DLNA.
It's important to check the driver version for your network adapter. Outdated software can cause connection interruptions or slow data transfer rates. You can update your drivers through Device Manager or by downloading the latest version from the official website of your motherboard or USB adapter manufacturer.
There are several main protocols that provide signal transmission:
- 📡 Miracast — technology for screen mirroring without using a router (Wi-Fi Direct).
- 📺 DLNA — a standard for transmitting media content between devices on the same network.
- 🌐 Chromecast built-in — Google's proprietary technology for broadcasting browser tabs and applications.
⚠️ Please note: If your TV is more than 10 years old and does not have Smart functions, wireless connection is only possible via an external set-top box (TV-box) with Wi-Fi support.
To check if your PC is compatible, open a command prompt and enter the command netsh wlan show driverThe line "Supports hosted network" should say "Yes". This will confirm that your Wi-Fi adapter capable of operating in access point mode or accepting a direct connection.
Setting up a DLNA server in Windows
The most common way to stream photos and videos from your computer to your TV is to create a media server. This feature is built into Windows by default and doesn't require any additional software. You just need to enable folder sharing and configure network settings.
To get started, go to the Control Panel and select "Network and Internet." Find "Network and Sharing Center" and go to "Sharing Settings." Make sure network discovery and file sharing are enabled for the current network (private).
Next, you need to select the folders that will be available to the TV:
- 📂 Open File Explorer and find the desired movie folder.
- 🖱️ Right-click, select "Properties" → "Sharing" tab.
- 🔓 Click "Advanced settings" and check the "Share with others" box.
- ✅ Add the user "Everyone" and give them read permissions.
After setting up the folders, launch the "Media Streaming" app using Windows Search. In the window that opens, you'll see a list of available devices on the network. Find your TV model (e.g., Samsung, LG or Sony) and click "Allow".
Now on the TV remote control, find the button to call up the list of signal sources (Source or Input) and select your computer. The TV menu will display the PC's folder structure, and you can start playing files directly.
Screen sharing via Miracast and Wi-Fi Direct
If your goal is to show a presentation, website, or game on a larger screen, you'll need screen mirroring. Technology Miracast Allows you to stream video in real time with minimal latency. Unlike DLNA, it streams not a file, but the entire desktop or a specific window.
You'll need to launch the wireless connection app on your TV. Depending on the brand, it may have different names: Screen Share (LG), Smart View (Samsung) or simply "Wireless Monitor." After starting, the TV will enter connection standby mode.
On your computer, follow these steps:
- Press the key combination
Win + Kto call the connection panel. - Select your TV from the list of available devices.
- Confirm the connection on the TV screen if prompted.
The system will automatically adjust the screen resolution. If the image appears stretched or blurry, go to Settings → System → Display and select the recommended resolution, such as 1920×1080 or 3840×2160.
⚠️ Note: When using Miracast via a Wi-Fi router (not Wi-Fi Direct), audio and video may become out of sync. For gaming and fast-paced content, it's best to use a cabled HDMI connection.
Image quality directly depends on signal strength. If you notice artifacts or jitter, try moving your computer closer to the router or switching to a less congested channel in your router settings.
☑️ Check before connection
Using third-party streaming apps
Windows' built-in tools don't always work perfectly, especially with TVs from different manufacturers. In such cases, third-party programs often offer more flexible codec and buffering settings. One of the most popular solutions is the app VLC Media Player.
VLC lets you stream video files directly to your TV using its built-in rendering feature. Open a video file in the player, right-click, select "Playback" → "Render," and select your TV from the list. The program will automatically transcode the stream into a format compatible with your TV.
Another powerful tool is the program PlexIt creates a beautiful interface with movie posters and descriptions, turning your PC into a full-fledged home theater.
- 🎬 Plex Media Server — installed on a PC, scans the media library.
- 📱 Plex Client — an application on Smart TV that accesses the server.
- 🔄 Automatic download of covers and subtitles.
For users who need to broadcast browser content Google Chrome To cast to your TV, simply click the menu (three dots) and select "Cast." This works even if your TV doesn't support Miracast but has a built-in Chromecast.
Why can't VLC see the TV?
Often, the problem lies in Windows Firewall settings. You should add VLC to the list of allowed applications for the private network or temporarily disable the firewall to test.
Comparison of connection methods and their characteristics
The choice of connection method depends on your specific needs: whether you simply want to watch a movie from a folder, share a presentation with colleagues, or play a game. Each protocol has its own advantages and limitations in terms of speed and quality.
Below is a table to help you determine the optimal connection method for your situation:
| Method | Image quality | Latency | The need for a router |
|---|---|---|---|
| DLNA | Original (no loss) | Low | Required |
| Miracast | Compressed (depending on signal) | Medium/High | Not required (Direct) |
| Chromecast | High | Low | Required |
| VLC / Plex | Original | Low | Required |
Please note that for streaming video in resolution 4K HDR Wi-Fi bandwidth must be at least 25 Mbps. Otherwise, buffering and reduced image quality may occur.
If you plan to frequently use your TV as a second monitor for work, make sure your Wi-Fi adapter supports the standard. Wi-Fi 6 (802.11ax)This will ensure minimal input lag, which is critical for comfortable use of the mouse cursor.
Network troubleshooting and diagnostics
Even with proper setup, technical difficulties can still arise. Most often, users encounter the problem that the computer doesn't see the TV in the device list. First, check if the feature is enabled. UPnP in your router settings. Without this protocol, discovering devices on the local network is impossible.
The issue may also be related to the network type. Windows classifies networks as "Private" and "Public." For the media server to work, the network must be designated as private. You can change this in the Wi-Fi connection settings by selecting the "Private Network" profile.
If there is a connection, but the video is lagging:
- 📉 Check the channel load on other devices.
- 📶 Make sure the Wi-Fi signal is not weakened by walls or household appliances.
- 💻 Close background programs on your PC that consume traffic.
⚠️ Note: Antivirus programs and third-party firewalls often block incoming connections from the TV. If you experience connection issues, try temporarily disabling network protection or adding an exception for Windows system services.
In some cases, resetting network settings helps. Open the command prompt as administrator and enter the command netsh winsock reset, then restart your computer. This will clear the network protocol cache and may resolve configuration errors.
Questions and Answers
Is it possible to connect an old TV without Smart TV to a computer via Wi-Fi?
An old TV doesn't have Wi-Fi built-in. However, you can buy a special adapter (such as a Google Chromecast, Mi Stick, or any Android box) that plugs into the HDMI port. This adapter will receive the Wi-Fi signal and transmit the image to the TV screen.
Why is there no sound when connecting via Miracast?
Most likely, the default audio output device is set to "Speakers" instead of your TV. Click the speaker icon in the Windows system tray, select the output device, and select your TV or wireless audio device.
Does connecting a TV affect internet speed?
When using DLNA or streaming files from a computer, you may not use any internet connection at all, as the streaming takes place within the local network. However, if you watch online video through a set-top box or stream a browser, your internet connection is deducted from your ISP plan.
Which Wi-Fi adapter is better for a PC: built-in or USB?
Integrated PCIe adapters typically have more powerful antennas and maintain a more stable connection, which is important for high-quality video transmission. USB adapters are convenient for laptops, but they can overheat under prolonged load if they don't have their own cooling system.
Do I need a password to connect?
When connecting for the first time via Miracast or DLNA, your TV may prompt you for confirmation, which will appear on its screen. If you're using a guest Wi-Fi network without access to local resources, the connection may fail without changing your router settings.