Modern technology makes it possible to transform any Smart TV into a fully-fledged multimedia center, allowing you to stream content from your computer without the hassle of cables. Syncing your PC and TV via WiFi opens up a vast library of content, allowing you to watch movies, TV shows, photos, and even play games on the big screen. This solution is ideal for those who value aesthetics and don't want the hassle of HDMI cables running across the room.
The connection setup process depends on your computer's operating system, TV model, and software version. Most systems use the standard Miracast protocol or DLNA technology, which are built into Windows 10 and 11. You won't need to purchase expensive adapters if both devices are on the same local network. The main thing is to make sure your router supports the standard. 5 GHz to transmit high-quality video stream without delays.
In this article, we'll cover all current connection methods in detail, from built-in Windows tools to third-party apps. You'll learn how to set up image streaming, how to stream audio only or video files, and how to address potential connection stability issues. Proper network configuration will ensure you enjoy comfortable viewing of high-definition content.
Equipment preparation and network requirements
Before you begin setup, make sure your TV and computer support wireless data transfer. For TVs, this means the presence of the function Smart TV and a built-in WiFi module. The computer must also be equipped with a wireless adapter. If you're using a desktop PC without a WiFi module, you'll need an external USB adapter that supports local network mode.
A critical requirement is that both devices be on the same subnet. This means that both the TV and computer must be connected to the same router. If you have a dual-band router, it's advisable to connect both devices to the network. 5 GHz, as it provides the large bandwidth required for streaming 4K video.
- 📺 Check that your TV's WiFi is enabled and connected to your home network.
- 💻 Make sure that the network adapter is active on your computer and the driver is installed.
- 🌐 Both devices must have IP addresses from the same subnet (e.g. 192.168.1.x).
- 🛡️ In the network settings on your PC, the "Private network" profile must be selected, not "Public."
⚠️ Note: If your router is using a guest network with client isolation enabled, devices will not be able to see each other. You must use the main network for synchronization.
Checking your connection speed is also a good idea. For comfortable viewing of Full HD video, a minimum speed of 20 Mbps is recommended, and for 4K, a minimum speed of 50 Mbps is recommended. You can check your current speed using any online service. If the signal is weak, you may need to relocate your router or use a WiFi repeater to boost the signal in the area where your TV is located.
Mirror your Windows screen to a Smart TV using Miracast
The easiest and fastest way to sync your PC with your TV is to use the built-in Windows "Connect to a Wireless Display" feature. This technology is based on the standard Miracast, which allows for real-time image and sound transmission. This method works on most modern TVs from Samsung, LG, Sony, and other brands that support Screen Sharing.
To get started, you often need to activate the signal reception mode on your TV remote. On Samsung TVs, this function may be called Screen Mirroring, on LG — Screen Share, and on Sony - Screen mirroringAfter activating the mode on your TV, go to your computer settings. Press the key combination Win + K or open the notification center and select "Project".
The system will begin searching for available devices. Once your TV's name appears in the list, click it. You may see a confirmation prompt on the TV screen—confirm the connection using the remote. After this, the entire Windows desktop image will be copied to the large screen. You can choose the operating mode: mirror, extend, or use the TV as a second monitor.
It's worth noting that when using Miracast, there may be a slight lag in the mouse cursor, which is normal for wireless technologies. This isn't a problem for watching movies or presentations, but it may not be suitable for fast-paced games. It's also important to ensure your graphics card and WiFi adapter drivers are updated to the latest version, available on the manufacturer's website.
Using DLNA technology to transfer media files
If your goal is not screen mirroring, but playing specific video files, photos or music stored on your PC's hard drive, it is better to use the technology DLNAIt allows the TV to view the computer as a media server and play content directly, without burdening the computer's processor with encoding the video stream.
In Windows, this feature is implemented through "Streaming Media Settings." To enable it, open "Control Panel," go to "Network and Internet," and select "Network and Sharing Center." In the left-hand menu, find "Streaming Media Settings" and enable streaming.
Setting path: Control Panel -> Network and Internet -> Network and Sharing Center -> Streaming Media SettingsOnce enabled, your TV will appear in the list of devices. Make sure it has permission to access media files. Now, when you open the Media Player or Gallery app on your TV, you'll see your computer listed as a source. You can navigate through folders using the remote, which is very convenient for browsing your family's archive.
Why doesn't the TV see DLNA folders?
If your TV isn't displaying certain folders, check their properties in Windows. The folder should be shared, and the streaming settings should be set to "Allowed." Also, make sure your antivirus isn't blocking the local connection.
The advantage of DLNA is that image quality is not compressed during transmission, unlike Miracast, where the video stream may be compressed. Furthermore, playback controls (pause, rewind) are completely controlled from the TV remote, allowing you to step away from your computer.
Synchronization via Google Chrome browser
A universal solution for users who have difficulties with built-in Windows tools is a browser Google ChromeIt has a built-in casting feature that works on virtually any Chromecast-enabled TV or Android TV. This method is especially useful if you need to show the contents of a specific browser tab.
To start casting, open the Chrome browser on your computer. Click the three dots in the upper-right corner of the menu and select "Cast." A list of available devices will appear in the window that opens. If your TV isn't listed, make sure the YouTube app or Chromecast built-in is running on it.
In the streaming source menu, you can choose what you want to show: the current tab, the entire desktop, or a specific application window. Selecting "Full Screen" will turn your TV into a second monitor. Streaming quality depends on the power of your WiFi router and the bandwidth used.
| Method | Latency | Quality | Best use |
|---|---|---|---|
| Miracast | Low/Medium | High | Presentations, photos |
| DLNA | Absent | Original | Movies, music |
| Chrome Cast | Average | Depends on the network | Web content |
| HDMI (cable) | Absent | Original | Games, 4K HDR |
Using a browser also makes it easy to stream content from sites that have copy protection, although some services (such as Netflix) may block screencasting through a browser due to DRM licensing restrictions, requiring the use of a native app on the TV.
Specialized applications for synchronization
When standard methods don't work or require advanced functionality, third-party programs come to the rescue. One of the most popular solutions is the app LetsView or AirServerThey provide a more stable connection and additional settings, such as cursor control from the remote control or screen recording.
To set up this synchronization method, you need to download and install the client program on both your computer (Windows/macOS) and your TV (through a Smart TV app store, such as the LG Content Store or Samsung Apps). After launching the apps on both devices, they will automatically connect via a QR code or PIN.
☑️ Pre-installation check
Some TV manufacturers offer their own utilities. For example, there is a program for LG LG TV Plus, and for Samsung - Smart View (Although Smart View support for PCs is gradually being phased out in favor of Microsoft standards.) Using native software often provides better compatibility with specific device models.
⚠️ Please note: App interfaces and feature names may vary depending on your TV's firmware version. Always check the latest instructions in the "Support" section of your model's manufacturer's official website.
Paid versions of such programs are often ad-free and offer support for 4K resolution without compression. Free alternatives may have session time or image quality limitations. Before installing, read reviews carefully to avoid software overloaded with ads.
Troubleshooting and troubleshooting
Even with proper setup, glitches may still occur: the image flickers, the sound disappears, or devices fail to connect. The first step should always be to reboot the router. Often, the problem stems from a router buffer overflow or a temporary IP addressing issue.
If your computer sees the TV but won't connect, check your Windows Firewall settings. Antivirus software may be blocking incoming connections required for Miracast or DLNA protocols. Try temporarily disabling the firewall to test. Also, make sure the date and time are correct on both devices—clock missync can prevent authorization.
- 🔄 Update your TV firmware through the settings menu.
- 🔌 Reboot your router by disconnecting the power for 10 seconds.
- 🛡️ Add exclusions to your antivirus for Windows system services.
- 📶 Switch your devices to a less crowded WiFi channel (1, 6 or 11).
If you experience frequent connection drops while watching heavy 4K content, consider using a wired connection for one of the devices. For example, connect the TV to the router via a LAN cable while leaving the computer on WiFi, or vice versa. This will stabilize the data transmission channel.
Frequently Asked Questions (FAQ)
Is it possible to connect an old TV without Smart TV to a PC via WiFi?
An old TV doesn't have a WiFi module or operating system. To connect wirelessly to a PC, you'll need to purchase an external adapter, such as a Google Chromecast, Amazon Fire TV Stick, or an Android set-top box. These devices connect to the TV's HDMI port and receive the WiFi signal, broadcasting it to the screen.
Why is there no sound when streaming via WiFi?
Most often, the problem lies with the playback device settings in Windows. Click the speaker icon in the system tray, select the audio output device, and select your TV or "Digital Audio (HDMI)." If this doesn't help, check the settings for the specific app or browser.
Does syncing affect internet speed?
Yes, locally transferring large amounts of data (such as video files) can consume a significant portion of your WiFi bandwidth. If your router is old or the channel is congested, internet speeds on other devices may decrease. Using the 5 GHz band minimizes this effect.
Will there be a delay in image quality when playing over WiFi?
When using Miracast or screen mirroring, input lag is inevitable and can be 100 ms or more. While this is acceptable for strategy or turn-based games, a wireless connection is unsuitable for shooters and fighting games—in these cases, an HDMI cable is required.