Modern users are increasingly abandoning bulky cables in favor of wireless connections that allow them to stream content from their computer to a large screen. Connecting a PC to a TV via a home Wi-Fi network allows access to movies, photos, and games without the need to physically connect the devices with an HDMI cable. This solution is especially relevant for Smart TV owners who want to use the TV as a monitor or media center.
The setup process may vary depending on your computer's operating system and the software version installed on your TV. Menu interfaces These are constantly updated by electronics manufacturers, so the names of the steps may differ from the standard ones. Before starting the procedure, make sure both devices are connected to the same wireless network, as this is critical for detecting the devices.
In this article, we'll cover the main synchronization methods in detail, including built-in Windows features, DLNA protocols, and third-party apps. You'll learn how to mirror your screen, stream video files, and set up remote control. wireless technologies requires a stable signal, so the quality of the router plays an important role in the success of the operation.
Technical requirements and equipment preparation
Before setting up, make sure your equipment meets the minimum technical requirements for wireless data transmission. The most important requirement is a Wi-Fi module on both your computer and TV. If your PC doesn't have a built-in adapter, you'll need an external USB receiver that supports 802.11n or higher to ensure sufficient throughput.
The second important requirement is that both devices must be on the same subnet. This means they must be connected to the same router. If you have a guest network configured or are using a range extender with a separate SSID, the computer and TV may not be able to see each other. In such cases, it's recommended to temporarily disable guest mode or reconnect the devices to the primary channel.
⚠️ Note: Some corporate networks or routers with AP Isolation enabled prohibit data exchange between devices within the local network. If you can't find your TV in the list of available devices, check your router's security settings.
It's also worth paying attention to the operating system version. Windows 10 and 11 remain current versions, which have built-in drivers for Miracast. Older versions, such as Windows 7, require additional software or browser extensions. TVs released before 2015 may not support modern codecs or security protocols.
Using the built-in Projection feature in Windows
The easiest way to display an image from a computer to a TV is to use the native function of the Windows operating system. Technology Miracast Allows you to share your screen without a router by creating a direct Wi-Fi connection between devices (Wi-Fi Direct). However, for the initial handshake, the devices must be on the same network or have discovery enabled.
To get started, press the key combination Win + K on the keyboard. The "Connection" panel will appear on the right, where the system will begin searching for available wireless displays. If the TV supports signal reception (Screen Share or MirrorLink mode), it will appear in the list. On some LG, Samsung, or Sony models, you may need to confirm the connection on the TV screen using the remote.
Once successfully connected, your desktop image will be duplicated on the large screen. You can change the operating mode by clicking Win + P and select "Extend," "Duplicate," or "Second Screen Only." This allows you to use the TV as a fully functional second monitor for working on documents or watching videos in a browser window.
⚠️ Please note: When using a wireless display, you may experience cursor lag or audio desync. This isn't a problem for office work or photo viewing, but it's not suitable for fast-paced gaming due to high input lag.
If the system reports "Wireless display not supported," check your graphics card drivers. Updating the adapter's software can often resolve the issue. Intel Wireless Display or NVIDIA/AMD drivers. Also, make sure "Projecting to this PC" is enabled in the system settings.
☑️ Check before connection
Setting up a DLNA media server to stream files
If your goal is not screen mirroring, but watching movies or listening to music stored on your PC's hard drive, the optimal solution is the technology DLNAThis protocol allows the TV to access computer folders as if they were network storage. Unlike Miracast, it doesn't transmit the entire screen's video stream, which reduces processor load and eliminates lag during playback.
In Windows 10 and 11, the media server feature is built in by default. To enable it, go to the Control Panel and find the "Media Streaming Settings" section. In the window that opens, click "Turn on media streaming." The system will prompt you to select devices that are allowed to access content. Find your TV model in the list and set its status to "Allowed."
Once set up, you'll need to launch the media app on your TV. It may be called "Media," "Home Network," "Smart Share," or a brand name like Samsung AllShareInside the app, you'll see your computer's folder structure. By navigating through the directories, you can launch video files directly from your PC's hard drive.
| Protocol | Purpose | Delay | Quality |
|---|---|---|---|
| Miracast | Screencasting | High | Depends on the signal |
| DLNA | Viewing files | Absent | Original |
| AirPlay | Apple Broadcast | Average | High |
| Chromecast | Casting tabs | Average | Adaptive |
Codec support is an important consideration. A TV may not play a file if it doesn't have a built-in decoder for a particular video or audio format. In such cases, the computer takes over streaming, but this rarely happens when using DLNA. For complex formats, it's better to use third-party servers, which are discussed below.
What should I do if the TV doesn't see the folders?
Make sure the network type in Windows is set to "Private" and not "Public." Windows blocks device discovery on public networks. Also, check your firewall—it shouldn't block incoming connections for the media player service.
Broadcast via Google Chrome browser and Chromecast
Owners of TVs with Chromecast Built-in support or a connected Chromecast set-top box can use the Google Chrome browser to mirror tabs. This method is convenient because it doesn't require extensive system configuration and works on any operating system with Chrome installed. Image quality is typically higher than standard Miracast.
To get started, open your browser and click the three dots in the upper-right corner of the menu. Select "Cast." The browser will scan the network and offer a list of available devices. You can cast a specific tab, your entire desktop, or an audio file. Selecting "Cast Desktop" will turn your TV into a second monitor.
The peculiarity of this method is that it heavily depends on computer performance. Real-time video encoding puts a strain on the CPU. If you're streaming graphics-intensive or 4K video, your computer may start to lag. However, for presentations, web surfing, and YouTube viewing, this method is ideal.
⚠️ Note: When casting a browser tab, audio may not be transmitted by default. Make sure "Cast Desktop (with audio)" or "Cast Tab" is selected in the "Sources" menu if you want audio.
If you don't have a built-in Chromecast on your TV but have an Android TV, the feature is often built into the system. Owners of regular TVs can buy an external dongle adapter that plugs into the HDMI port. This turns any HDMI-equipped monitor into a smart screen, ready to receive a signal from a PC.
Connecting Apple Mac computers to a TV
Apple ecosystem users have their own protocol AirPlay, which ensures stable and high-quality image transmission. To use, you need a TV with AirPlay 2 support (many modern Samsung, LG, Sony, and Vizio models) or an Apple TV set-top box. Integration with macOS allows you to display your screen without installing additional drivers.
In the Mac toolbar (at the top of the screen), find the "Screen Mirroring" icon (two rectangles). Select your TV from the drop-down list. If the devices are on the same network, the connection will be established automatically. A verification code may appear on the TV screen, which you must enter on your computer for security.
AirPlay not only allows you to mirror your screen but also use your TV as a separate display in Extended Mode. This is convenient for working with graphics or editing videos, allowing you to keep the toolbar on your MacBook and the preview on your TV. Audio can also be transmitted through external speakers if your TV is connected to a sound system.
It's important to note that AirPlay only works within the Apple environment. Connecting a Windows PC to an AirPlay-compatible TV directly using standard tools is not possible. Third-party emulators, such as LonelyScreen or Reflector, are required. These emulators are installed on the PC and create a virtual AirPlay device.
Alternative solutions and third-party software
When standard methods don't work or the functionality isn't sufficient, specialized programs come to the rescue. One of the most popular solutions is PlexThis powerful media server doesn't just stream files, it also beautifully designs your library, adding posters, descriptions, and subtitles. Plex can be installed on both a PC (server) and a TV (client).
Another option is a program LetsView or ApowerMirrorThese utilities allow you to mirror your PC screen to a TV with additional features, such as controlling your computer with a remote control or using touchscreen (if the TV supports it). They often perform more reliably than standard Windows tools, especially in heterogeneous networks (where devices from different brands are mixed).
For gamers who want to play on a TV without losing quality, there are solutions based on Steam LinkIf you have the Steam client installed on your PC, you can launch the game on your computer and stream the image to your TV using the Steam Link app. This ensures low latency and high image quality using the H.264 or H.265 codec.
| Program | Type | Complexity | Best use |
|---|---|---|---|
| Plex | Media server | Average | Movies and TV series |
| LetsView | Translator | Low | Presentations |
| Steam Link | Streaming | Average | Games |
| VNC Viewer | Remote access | High | Administration |
When choosing software, pay attention to the license. Many programs offer free basic functionality, but limit session time or image quality in the trial version. For ongoing use, it's better to choose open-source solutions or paid subscriptions that guarantee stability.
Common problems and solutions
Even with proper setup, users may encounter problems. The most common is that the TV doesn't appear in the list of available devices. This is often due to router settings, where access point isolation is enabled. Antivirus software or Windows Firewall may also be blocking incoming connections. Try temporarily disabling protection to test.
The second common scenario is choppy video or constant buffering. This indicates a weak Wi-Fi signal. Streaming 4K video requires a stable speed of at least 25 Mbps. If your router is located far away, use the 5 GHz band instead of 2.4 GHz, as it's less congested and provides faster speeds, albeit over a shorter distance.
Sound issues are often resolved by switching the playback device. Click the speaker icon in the Windows tray, select the TV from the list, and check the volume levels on both devices. Sometimes, audio drivers need to be updated through Device Manager.
⚠️ Warning: If you use a VPN on your computer, your local network may become unavailable to your TV. A VPN reroutes traffic through a remote server, cutting off the connection to local IP addresses. Disable the VPN when setting up the connection.
In some cases, resetting network settings can help. In Windows, this can be done via the command line by entering the following commands: netsh winsock reset And netsh int ip reset, after which a reboot is required. On the TV, simply perform a "Cold Start" (unplug the TV from the power outlet for 1 minute).
Frequently Asked Questions (FAQ)
Is it possible to connect a PC to a TV without a router?
Yes, this is possible using Wi-Fi Direct or Miracast technology. The computer and TV create a direct wireless connection between them. However, for initial device discovery, a shared network (or at least one active Wi-Fi module) is often required. You can also share Wi-Fi from your phone, but this will increase latency.
Why is there no sound when connected via Wi-Fi?
Most likely, a different audio output device is selected by default in your system. Click the speaker icon in the Windows system tray, expand the list, and select your TV (often identified by its model or brand, such as Samsung or LG). Also, check that the volume on your TV isn't turned down.
Does connecting other devices affect picture quality?
Yes, it does. Wi-Fi has limited bandwidth. If other users are downloading files, watching 4K video, or playing online games, the available bandwidth for streaming from PC to TV may drop, causing artifacts or buffering.
How to improve image quality over a wireless connection?
Use the 5 GHz band, which is less susceptible to interference. Place the router closer to the TV and computer. In your graphics card settings (NVIDIA/AMD), you can try lowering the output resolution or frame rate if the channel is bottlenecked. For critical tasks, it's better to use an HDMI cable.
Is it safe to use third-party streaming software?
Popular open-source programs or those from reputable developers (like Plex or Steam) are safe. However, downloading unknown utilities from dubious websites can lead to malware. Always check digital signatures and reviews before installing.