Modern multimedia content demands large screens, and there's often a need to display content from a laptop or desktop PC on a TV. This could be for presenting to colleagues, watching movies from a browser, or playing a resource-intensive game. A wireless Wi-Fi connection eliminates the need to run long HDMI cables across the room, making the process as convenient and aesthetically pleasing as possible.
Wireless data transmission technologies today make it possible to stream high-definition images with virtually no latency. However, there are many ways to achieve this, depending on your computer's operating system and the platform it's running on. Smart TVWe'll explore the most effective methods to help you set up communication between devices in just a few minutes.
Before you begin setup, you need to make sure both devices are connected to the same Wi-Fi network. This is critical: if your laptop is connected to a mobile data plan or a guest network, and your TV is connected to the main network, the connection will fail. Also, make sure your router supports the standard. 5 GHz for more stable video stream transmission.
Using built-in Windows features for broadcasting
Windows 10 and 11 operating systems have powerful built-in tools for wireless display. Technology Miracast Allows you to duplicate your screen without installing additional software if your TV supports the "Screen Mirroring" or "Broadcast" function.
To start the process, press the key combination Win + K on the keyboard. The "Connection" panel will appear on the right, where the system will search for available displays. Select your TV from the list. A connection confirmation prompt may appear on the TV screen, which you'll need to accept using the remote.
After successful pairing, you can select the operating mode. Press Win + Pto switch between "Duplicate" (the same image on both screens) or "Extend" (the TV becomes a second desktop). This is especially convenient for working with multiple windows simultaneously.
- 🖥️ The "Repeat" mode is ideal for viewing photos and videos on a large screen.
- 💻 The "Extend" mode turns the TV into an additional monitor for a browser or player.
- 🎮 The "Second Screen Only" mode turns off the PC monitor, transmitting the image only to the TV.
⚠️ Please note: When using Miracast, there may be a slight delay in the mouse cursor. This isn't a problem for office work, but lag may be noticeable in fast-paced shooters.
It's important to keep in mind that image quality directly depends on the power of your Wi-Fi router. If the signal is weak, the system may automatically reduce the resolution to maintain a stable connection. In this case, try moving closer to the router or updating the Wi-Fi adapter drivers on your computer.
Setting up a DLNA server for multimedia
If your goal is not to duplicate your desktop, but to watch movies, photos or listen to music stored on your PC's hard drive, then the technology DLNA (Digital Living Network Alliance) is the best choice. It allows the TV to view the computer as a media storage device and play files directly.
In Windows, this feature is called "Media Streaming." To enable it, open "Settings" from the Start menu and go to "Network & Internet." In the Advanced settings, find "Media Streaming Settings" and enable this feature.
Once activated, the system will prompt you to select devices that are allowed access. Find your TV's name in the list and set its status to "Allowed." Now, when you play supported files (such as MKV or MP4 video files) in the standard Windows media player, a "Cast to device" button will appear in the playback menu.
Many modern Smart TV Samsung, LG, and Sony have built-in apps for accessing media servers. For example, Samsung uses the AllShare Play app or a built-in media player that automatically scans the network for DLNA servers.
☑️ Check DLNA settings
It's worth noting that DLNA doesn't allow you to control the cursor or open programs on your TV. It's a purely file-based protocol. If you need to run a game or program, this method won't work, and you'll have to use screen mirroring.
Connecting macOS and Apple devices (AirPlay)
Apple ecosystem users can take advantage of the technology AirPlay 2, which provides the highest quality image and sound transmission. Many modern TVs (Samsung, Sony, Vizio, LG) already have built-in AirPlay 2 support, eliminating the need for an Apple TV set-top box.
To connect, make sure your Mac and TV are on the same Wi-Fi network. In the Mac's Control Panel (or menu bar), find the "Screen Mirroring" icon (two rectangles). Select your TV from the list of available devices. If this is your first time using the TV, a four-digit code will appear on the TV screen. Enter it on your computer.
AirPlay not only allows you to mirror your screen but also output the image exclusively to your TV, leaving your laptop free for other tasks. This technology also supports audio streaming to external speakers connected to the TV, improving audio quality.
| Parameter | Miracast (Windows) | AirPlay 2 (Apple) | DLNA |
|---|---|---|---|
| Transmission type | Screen mirroring | Mirroring + Media | Files only |
| Latency | Low/Medium | Minimum | Absent |
| Sound quality | Depends on the codec | High | Original |
| Compatibility | Android TV, Windows | iOS, macOS, Smart TV | All Smart TVs |
If your TV doesn't natively support AirPlay, you can use third-party emulator apps installed on your TV (for example, AirScreen on Android TV), but stability is not guaranteed.
Using the Google Chrome browser
Browser Google Chrome is one of the most versatile tools for connecting to a TV, especially if you have an Android TV or Chromecast built-in. This method works on Windows, macOS, and Linux.
Open the Chrome browser on your computer. Click the three dots in the upper-right corner of the menu and select "Cast." The browser will scan the network and prompt you to select a device. You can cast a single tab, the entire desktop, or a specific video file.
The advantage of this method is its cross-platform compatibility. Even if you have an older TV without Smart TV, but with a Chromecast or Android Box, you can easily display the image. Streaming quality adapts to your network speed in real time.
Why does video lag when streaming through Chrome?
A common cause is an overloaded Wi-Fi channel or the use of the older 802.11n standard. Try switching your router to a 5 GHz channel or closing background downloads on other devices. Also, heavy web pages with numerous scripts can overload the processor when encoding the video stream.
To broadcast your entire screen, select "Full Screen" from the source menu. This will allow you to show any applications running on your PC, not just browser content. However, audio in "Tab" mode is better transmitted than in "Full Screen" mode on some OS versions.
Third-party remote control programs
When built-in tools fail or advanced features are required, specialized utilities come to the rescue. Programs like TeamViewer, AnyDesk or specialized media centers (Plex, Kodi) allow flexible content management.
Plex, for example, turns your computer into a powerful media server with a beautiful interface. You install the server on your PC, where your files are stored, and the client app on your TV. Plex automatically downloads movie covers, descriptions, and organizes your library, creating a Netflix-like interface.
For remote desktop control (for example, showing presentations or configuring a system), TeamViewer and AnyDesk offer low latency and mouse control with a remote control (if the TV supports a mouse or gamepad). This is useful for IT professionals or when demonstrating something to a remote user.
- 📀 Plex — the best choice for organizing a home video library with automatic sorting.
- 🔧 TeamViewer - suitable for technical support and full control over the PC.
- 📡 Kodi — a powerful all-in-one combine for advanced users.
⚠️ Important: When installing third-party software on your TV, carefully check the download sources. Use only official app stores (Google Play, LG Content Store, Samsung Apps) to avoid viruses.
Using such programs often requires account registration and initial setup, but in the long run, this provides the most stable and functional result for content consumption.
Troubleshooting and connection diagnostics
Even with proper setup, issues may still occur. If your computer can't detect your TV, first check your Windows Firewall settings. It may be blocking incoming connections for device discovery protocols.
Go to "Control Panel" → "Windows Defender Firewall" → "Allow an app." Make sure "Network discovery" and "Media streaming" are checked for private networks.
Another common issue is Wi-Fi frequency separation. Some routers create two networks: 2.4 GHz and 5 GHz, each with the same name, but devices can get stuck on different frequencies, preventing a direct connection (Wi-Fi Direct). Try temporarily separating the network names in your router settings.
It's also worth updating your PC's wireless adapter drivers. Visit your laptop or motherboard manufacturer's website and download the latest WLAN drivers. Older drivers may not work correctly with the new WPA3 encryption protocols.
Frequently Asked Questions (FAQ)
Is it possible to connect a computer to a TV without a router?
Yes, this is possible using Wi-Fi Direct technology. In this case, the TV automatically creates a wireless network to which the computer connects. However, the transmission speed may be lower, and the functionality is limited to screen mirroring.
Why is there no sound when connected via HDMI or Wi-Fi?
Check the audio output device in Windows. Click the speaker icon in the system tray and select your TV from the list of output devices. Often, the sound is output from the laptop's speakers by default.
Does connecting a TV affect internet speed?
When actively streaming 4K video, data usage can reach 25 Mbps or more. If the bandwidth is limited, speeds on other devices may drop. Simple screen mirroring places minimal strain on the internet connection, as data is transferred within the local network.
How to improve the quality of a picture if it is blurry?
Make sure your PC resolution is set to the native resolution of your TV (usually 1920x1080 or 3840x2160). Also, enable "Game" or "PC" mode in your TV settings to disable unnecessary image post-processing that can cause lag and blur.