Modern technology allows you to eliminate unnecessary cables, transforming your living room into a fully-fledged multimedia center. Connecting your computer to your TV via Wi-Fi is not only convenient but also aesthetically pleasing, eliminating the clutter of HDMI or VGA cables. This data transfer method opens up access to a vast array of content: high-definition movies, family photos, or even playing resource-intensive games on the big screen are all available in just a few clicks.
There are several main protocols for implementing this task, each of which has its own characteristics and scope of application. DLNA ideal for streaming your media library, Miracast allows you to duplicate your screen in real time, while proprietary solutions like AirPlay or Google Cast are tailored to specific ecosystems. The choice of method depends on your goals: whether you just want to watch a movie or plan to use the TV as a second monitor for work.
It is important to understand that connection stability directly depends on the quality of your home network. To ensure 4K content is delivered without lag, it's critical that both your computer and TV are within range of a strong 5GHz router signal. Unlike a wired connection, the channel is subject to interference, so proper equipment setup is the key to comfortable use.
Technical requirements and equipment preparation
Before you begin setup, you need to make sure your equipment meets the minimum requirements. Both devices—the PC and the Smart TV—must support wireless standards. Modern TVs almost always come with a built-in module. Wi-Fi, however, older models may require connecting an external USB adapter or using technology Wi-Fi Direct.
The computer must also have a working network adapter. If you are using a desktop PC without a built-in module, you will need to purchase a USB dongle that supports the standard. 802.11ac or newer. Please note that for high-definition video streaming, the channel bandwidth must be sufficient; otherwise, image artifacts and audio desynchronization may occur.
Make sure your device software is up-to-date. Manufacturers regularly release updates that fix network module bugs and add support for new codecs.
⚠️ Please note: Smart TV interfaces (Tizen, webOS, Android TV) may vary depending on the model and year of manufacture. The location of network settings may change after firmware updates.
DLNA method: organizing a media server
Technology DLNA (Digital Living Network Alliance) is the most widely used standard for sharing multimedia content on a home network. It allows you to stream files (video, audio, photos) from a computer to a TV without having to copy the data. In this setup, the computer acts as a server (DMS), and the TV acts as a renderer (DMR), which plays the content.
To implement this method in Windows, you don't need to install third-party software; you just need to properly configure the built-in streaming function. Open Control Panel, go to Network and Internet, then select Network and Sharing CenterIn the menu on the left, find the item Media streaming options and activate it.
Once enabled, the system will prompt you to select devices that are allowed to access your libraries. Find your TV's name in the list and set it to "Allowed." Now, when you launch a video file using a standard player (for example, Groove Music or "Movies and TV") the "Cast to device" option will appear in the context menu.
- 📺 The TV will automatically detect the computer as a signal source in the list of available devices.
- 📁 Popular formats are supported: MKV, MP4, AVI, JPEG, MP3 without the need for conversion.
- 🔒 Only devices on the same local network can access files.
- 🎮 Playback control (pause, rewind) is carried out using the TV remote control.
It's worth noting that DLNA doesn't allow you to mirror your desktop or run games. It's a purely file-based protocol. If you want to run a game on your PC and see the image on your TV, this method won't work—you'll need screen mirroring technology.
Miracast technology and screen mirroring
If your goal is to project your entire computer monitor onto a larger screen, including your desktop, Start menu, and running applications, you'll need technology MiracastThis standard allows for direct Wi-Fi connections between devices, bypassing a router, or using existing network infrastructure to transmit video streams with minimal latency.
In Windows 10 and 11, this functionality is deeply embedded. To start broadcasting, press a key combination. Win + KA "Connection" panel will appear on the right, where the system will begin searching for available wireless displays. Make sure the signal receiving app (often called Screen Share, MirrorLink or simply "Screencasting").
Once the device is detected, select it from the list. A confirmation message may appear on the TV screen—confirm the connection using the remote. The computer's image will appear on the TV. You can select the operating mode: mirroring screens, extending the desktop, or using the TV as the primary monitor. These settings are accessible through the menu. Settings → System → Display.
⚠️ Note: When using Miracast for gaming, frame rate is important. If you notice stuttering or blurry text, try lowering your PC's screen resolution or moving your computer closer to the router.
Technology Intel WiDi (Wireless Display), which was the basis for early wireless display implementations, is now integrated into the Miracast standard, so finding separate software for older Intel graphics cards is usually not necessary.
☑️ Checking Miracast Readiness
Using Google Chrome Browser and Chromecast
Owners of TVs that support this technology Google Cast (or connected Chromecast or Android TV boxes) can use the Google Chrome browser on your computer as a universal remote control. This method is convenient because it doesn't require complex network setup and works on virtually any operating system with Chrome installed.
To start broadcasting, open your browser and click the three dots in the upper right corner of the menu. Select Live from the drop-down list. Broadcast.. (Cast). The browser will scan the network and offer a list of available devices. You can cast a single tab, the entire desktop, or a specific media file.
A unique feature of this method is the ability to use your smartphone as a remote control. By streaming a browser tab to your PC, you can control playback through the app. Google Home on your phone. This is especially convenient if your computer is far from the TV or you don't want to waste time on the keyboard.
| Parameter | Miracast (Windows) | Google Chrome Cast | DLNA |
|---|---|---|---|
| Transmission type | Screen mirroring | Tab / Screen / File | Files only |
| Latency | Low | Average | Absent |
| Router dependency | Depends (or Direct) | Necessarily | Necessarily |
| Picture quality | High (up to 1080p/4K) | Depends on the tab | Original file |
If the system is weak, the interface may slow down.
Why does the sound disappear when casting to Chrome?
Sometimes the browser doesn't transmit system audio by default, only the audio from the tab. Check the Cast tab settings and ensure the "Full Screen" source is selected or the "Transmit System Audio" option is enabled.
Connection specifics for different brands
TV manufacturers often implement their own add-ons to standard protocols, which can cause confusion for users. Understanding these nuances will help you find the desired function in the menu more quickly.
Televisions Samsung use technology Smart ViewConnecting a PC to these models is often as simple as selecting the "Screen Mirroring" signal source in the TV menu. In Windows 10/11, they are detected as wireless monitors. Samsung is also actively promoting AirPlay 2 integration, allowing Mac and iPhone users to connect without any hassle.
Devices LG an application based on webOS is offered Smart Share to work with DLNA and the function Screen Share for Miracast. New LG models have added AirPlay 2 support, making them some of the most compatible on the market. For Windows PCs, the connection process is standard via the "Project" menu.
Televisions Sony Android TVs use the built-in Chromecast feature. There's no need to search for special apps—just have the Chrome browser on your computer. However, Miracast (which is implemented as Cast in Android) may require an app. Miracast receiver* from Google Play if the built-in one is not activated automatically.
- 📺 Samsung: Look for the Smart View or Screen Mirroring feature in the source menu.
- 📺 LG: Use Smart Share for files and Screen Share for your screen.
- 📺 Sony / Philips: Look for built-in Chromecast and AirPlay support.
- 📺 Xiaomi / Mi Box: Full integration with the Google Cast ecosystem.
⚠️ Note: On some TV models, wireless features may be disabled by default to save power. Check the "Network" or "General Settings" section and ensure "Mobile Receive" or similar options are enabled.
Troubleshooting and speed optimization
Even with proper setup, users may encounter issues: the image flickers, the audio lags behind the video, or the device is not connected to the network at all. Most often, this is due to wireless congestion or power saving settings.
The first thing to do when you have low performance is to switch your router to a frequency 5 GHzThe 2.4 GHz band is often clogged with signals from neighbors, microwaves, and Bluetooth devices, creating interference. 5 GHz provides a much wider data channel, which is critical for high-definition video.
It's also worth checking the power settings for your computer's network adapter. Windows may try to save power by periodically disabling the Wi-Fi module. Go to device Manager, find your wireless adapter, open properties and on the tab Power management Uncheck the box next to "Allow the computer to turn off this device to save power."
If the TV and computer are on different subnets (for example, one is connected to guest Wi-Fi and the other to the main Wi-Fi), they may not be able to see each other. Make sure both devices are connected to the same network (SSID) and have IP addresses from the same subnet (e.g., 192.168.1.x).
Why can't the TV see the computer via Wi-Fi?
Most often, the issue lies with Windows Firewall settings or the network type. Make sure your network in Windows is marked as "Private" and not "Public." Windows blocks device discovery on public networks. Also, check that the "Function Discovery Resource Publishing" service is running in the "Services" section.
Can you play games on TV via Wi-Fi?
Yes, but with limitations. For fast-paced shooters, input lag from a wireless connection can be critical. However, for strategy games, card games, or leisurely RPGs, connecting via Miracast or technologies like NVIDIA GameStream (via Shield TV) is perfectly acceptable. For the best experience, use an HDMI cable or a dedicated 5 GHz Wi-Fi channel.
Do you need internet for DLNA or Miracast to work?
No, internet access is not required. These technologies operate within a local area network (LAN). A router is only needed as a switch for data exchange between devices. You don't even need to connect the router to your ISP; the important thing is that it distributes a Wi-Fi signal that connects your PC and TV.