Modern multimedia capabilities allow you to transform your living room into a real cinema using only a wireless connection. Connect your computer and TV via Wi-Fi This isn't a problem these days, as most Smart TVs and laptops support wireless data transfer standards. This eliminates the need to run long HDMI cables across the room and hide them behind baseboards.
However, despite the apparent simplicity, users often encounter various problems: devices don't see each other, streaming is slow, or there's no sound. In this article, we'll cover all the current connection methods, from built-in Windows features to specialized applications. You'll learn how to set up image output in one click and what nuances should be taken into account for different operating systems.
Before proceeding with the settings, make sure that both devices are connected to the same local network. This fundamental condition For most media transfer protocols to work. If your router broadcasts on both 2.4 GHz and 5 GHz frequencies, try to ensure that both your PC and TV are on the same band, although modern routers usually handle traffic between them correctly.
Wireless image transmission technologies
There are several main standards that allow you to stream content from your PC to a big screen. Understanding the differences between them will help you choose the best method for your situation. Miracast — is a technology developed by the Wi-Fi Alliance that allows you to transmit images and sound without compression and loss of quality using a direct Wi-Fi Direct connection.
Unlike Miracast, the protocol DLNA (Digital Living Network Alliance) is designed primarily for streaming multimedia files (video, photos, music) from a server (computer) to a renderer (TV). It doesn't duplicate the computer screen, but rather provides access to the media library.
The third popular technology is Google Chromecast (or Chromecast built-in), which runs on the Android TV operating system and many Smart TVs from other manufacturers. It allows you to "cast" browser tabs or the entire screen using your Google account.
Connecting via built-in Windows 10 and 11 tools
Microsoft operating systems have built-in support for wireless displays. You don't need to install any additional software to get started if your TV supports Miracast technology. Most modern models Samsung, LG, Sony and other brands are already equipped with this feature.
On your computer keyboard, press the key combination Win + KThe "Connect" panel will open on the right. Your TV should appear in the list of available devices. If it doesn't, check your TV settings: you often need to manually enable the "Screen Menu" or "Connect to a Wireless Display" function in the menu.
⚠️ Note: If your TV is not found, make sure that power saving mode is disabled on your TV and that the discover new devices function is enabled in your network settings.
After selecting the device, a connection request will appear on the TV screen. Accept it using the remote control. The Windows desktop image is now projected onto the big screen. You can change the projection mode by pressing Win + P and selecting "Duplicate" or "Extend".
Setting up a DLNA server to stream media files
If your goal isn't screen mirroring, but rather viewing movies or photo galleries stored on your PC's hard drive, it's better to use DLNA. This method requires less Wi-Fi bandwidth, as it only transmits the data stream, not the video signal of the entire interface.
To enable this feature in Windows, open Settings → Network & Internet → Sharing Options. Enable Network Discovery and File and Printer Sharing. Then, in the Streaming Media Settings menu (found by searching in Control Panel), allow access to your TV.
- 📺 Open the Smart TV menu and find the "Media Player", "Home Server" or similar app.
- 💻 Select your computer from the list of sources.
- 📁 Go to the "Videos" or "Images" folders to access the content.
Some video formats may not play natively if the TV doesn't support a specific codec. In such cases, it's worth considering using third-party software, which is discussed below.
Why is video lagging over DLNA?
Delays may be caused by a slow Wi-Fi router or congestion from neighboring networks. Try switching to the 5 GHz frequency.
Using Google Chrome Browser for Broadcasting
Browser Google Chrome is a powerful streaming tool, especially if your TV supports Chromecast or runs Android TV. This method is convenient because it allows you to cast a specific browser tab or your entire desktop.
Open your computer's browser. Click the three dots in the upper-right corner of the menu and select "Cast...". The system will begin searching for available devices. You'll see your TV in the list.
In the window that opens, you can choose what to cast: a browser tab, the entire screen, or a local file. For better quality, select "Cast screen," but this may increase CPU usage.
⚠️ Note: When casting your entire screen via Chrome, audio and video may become out of sync. For movies, it's best to use built-in players or DLNA.
The advantage of this method is its cross-platform nature: it works equally well on Windows, macOS, and Linux. All you need is a browser installed and a stable internet connection.
Third-party programs for advanced users
Built-in tools don't always provide the desired functionality. For example, if you need to mirror your macOS screen to an AirPlay 2-enabled TV, or if standard methods aren't working reliably, specialized utilities can help.
One of the most popular programs is AirServer or ApowerMirrorThey install a virtual receiver or transmitter on your computer, ensuring compatibility across different ecosystems. For example, you can mirror your iPhone screen to your PC, and then from there to your TV.
For video card owners NVIDIA GameStream is available, allowing you to stream games from your PC to your TV (provided the TV has the NVIDIA Shield client or similar software installed). This ensures minimal input lag, which is crucial for gamers.
Comparison of connection methods and troubleshooting
To organize the information and choose the best option, let's compare the methods discussed using key parameters. This will help you understand which method is right for you.
| Method | Quality | Delay | Complexity |
|---|---|---|---|
| Miracast (Win+K) | High | Low | Low |
| DLNA | Maximum | Absent | Average |
| Google Chrome | Average | Average | Low |
| Third-party software | Depends on the software | Different | High |
If you encounter problems, run basic diagnostics. Restarting the router and updating the Wi-Fi adapter drivers on your computer often helps. Also, check whether your antivirus or firewall is blocking your connection to the local network.
☑️ Connection diagnostics
In some cases, antivirus software may block ports required for DLNA or Miracast. Try temporarily disabling network protection (only on a trusted home network) and test the connection.
Frequently Asked Questions (FAQ)
Is it possible to connect an old TV without Smart TV via Wi-Fi?
The old TV itself doesn't have a Wi-Fi module. However, you can buy an external adapter (for example, Google Chromecast, Amazon Fire Stick or Mi TV Stick), which connects to the HDMI port. You can then stream images to it like a regular Smart TV.
Why is there no sound on the TV when connected via Wi-Fi?
Most likely, the audio output device isn't selected in Windows. Click the speaker icon in the system tray, select the arrow next to the volume slider, and select your TV or wireless headset from the list of playback devices.
Does connecting other devices affect picture quality?
Yes, Wi-Fi has limited bandwidth. If someone on the network is actively downloading torrents or watching 4K video on another device, this may cause buffering or a decrease in the quality of the streamed image.
Is it safe to use public Wi-Fi networks for streaming?
No, on public networks (such as cafes and airports), device discovery is often blocked at the router level for security reasons. Furthermore, data transmissions on open networks can be intercepted. Use only trusted home networks.