Modern all-in-one PCs boast powerful processors and excellent displays, but sometimes a standard screen size isn't enough. You might want to play a game on a larger screen, show a presentation to colleagues, or simply watch a movie while relaxing on the couch. Fortunately, dangling bulky HDMI cables across the room is no longer necessary, thanks to the advances in wireless technology. In this article, we'll look at how to connect an all-in-one PC to a TV via WiFi, ensuring stable picture and sound transmission.
The main difficulty users face is not the lack of necessary ports, but the correct choice of data transfer protocol. Wireless connection Networks can operate using different standards, which affects signal latency and image quality. If you're simply planning to stream video files, your network requirements will be different, while those for fast-paced gaming or word processing will have completely different requirements. We'll review all the current options so you can choose the one that best suits your needs.
Before proceeding with the settings, make sure that both devices are on the same local network. fundamental condition for most broadcast technologies to work, the router must support the standards IEEE 802.11ac or newer to ensure sufficient bandwidth. If the network is overloaded with other devices, image quality may suffer, so it's recommended to clear the channel of heavy loads before beginning setup.
Wireless image transmission technologies: Miracast and DLNA
To successfully sync your all-in-one PC and TV, it's important to understand the differences between the main protocols. Most commonly, we're talking about two technologies: Miracast And DLNAThe first allows you to mirror your computer screen to your TV in real time, transmitting a video stream with minimal latency. This is ideal for gaming, working with documents, or demonstrating program interfaces. The second technology, DLNA, is primarily designed for multimedia: it allows you to access files (videos, photos, music) stored on your all-in-one PC's hard drive on your TV.
Most modern Smart TV Samsung, LG, Sony, and Philips all have built-in Miracast support, often referred to as "Wireless Display" in Windows. If your TV is a few years old, it may not support direct display connection, but it will almost certainly support DLNA. In this case, the all-in-one PC will act as a media server. The Miracast protocol creates a direct WiFi connection between devices (WiFi Direct), which reduces the load on the router, unlike DLNA, where all traffic goes through the router.
The choice of technology also depends on the operating system. Windows 10 and 11 have built-in tools for working with both protocols, making the process much easier. MacOS users will need third-party software or a TV with AirPlay 2 support. It's important to note that when using Miracast, the screen resolution may automatically change to match the TV's capabilities.
⚠️ Important: When using a DLNA server to stream high-resolution video (4K HDR), ensure your router operates in the 5 GHz band. The 2.4 GHz band may not provide sufficient throughput, resulting in constant buffering.
Equipment preparation and compatibility testing
Before starting setup, you should perform a hardware inspection. Make sure your all-in-one's WiFi adapter is working properly and that its drivers are updated to the latest version. Connection issues are often caused by outdated network module software that doesn't work correctly with new encryption standards. Go to Device Manager and check the network adapter's status.
It's also worth checking the TV's settings. In the Smart TV menu, the wireless signal reception function may be disabled by default. This is usually located in the "Settings" section. Settings → Network → Screen Mirroring or "Connect to a mobile device." On some LG models, this function is called Screen Share, and on Samsung - Smart View.
For stable operation, it's recommended to place the all-in-one PC and the router within line of sight, if possible. Walls and metal structures can block the signal, especially at 5 GHz. If the all-in-one PC is located far from the router, consider using a WiFi repeater to boost the signal in that area.
☑️ Check before connection
Method 1: Cast your screen using the Projection feature in Windows
The fastest way to connect your all-in-one PC to your TV wirelessly is to use Windows' built-in feature. This method is based on Miracast technology and doesn't require any additional software. First, make sure your TV is turned on and ready to receive a signal. Then, press the following key combination on your all-in-one PC's keyboard. Win + KThis will open the Connection panel on the right side of the screen.
The system will start searching for available devices. Your TV should appear in the list. If it doesn't appear, check your Windows privacy settings. Go to Settings → System → Project to this PC and make sure that the "Wireless Monitor" feature is set to "Available anywhere on secure networks."
After selecting your TV, a confirmation message may appear on the screen. Use your TV's remote control to press "Allow." The image from your TV will appear on the big screen. You can change the operating mode by pressing "Allow" again. Win + P: You can duplicate your screen, extend your desktop, or use your TV as a second monitor.
It's important to note that this method places a strain on the processor, as the video stream is encoded in real time. This isn't a problem for office work and photo viewing, but heavy 3D games may experience a drop in FPS. Hardware encoding (Intel Quick Sync or NVIDIA NVENC) helps reduce the load, but requires the correct installation of video card drivers.
Method 2: Create a DLNA server for multimedia
If you want to watch movies or photo albums stored on your all-in-one PC's hard drive, it's best to use DLNA technology. Windows can act as a media server without third-party software, although the basic version has limited functionality. To enable it, open "Media Streaming Settings" from the Control Panel or search bar. Click "Turn on media streaming."
In the window that opens, you'll see a list of devices on your network. Find your TV and make sure it's marked "Allowed." Next, the system will prompt you to select libraries (videos, music, and images) that will be available for viewing on the TV. You can add specific movie folders to these libraries.
On your TV, launch the app responsible for external signal sources. It may be called "Media," "My Files," or have a DLNA logo. You'll see your TV's name inside. Opening it will give you access to your shared folders. Navigation is handled by the remote, which is very convenient for a home theater system.
| Parameter | Miracast (Broadcast) | DLNA (Media Server) |
|---|---|---|
| Content type | Full screen (desktop) | Files (video, photos, music) |
| Delay | Low/Medium | Absent (streaming) |
| Control | From a monoblock | From the TV remote control |
| Background work | The window cannot be minimized | You can work on a PC |
For more advanced users, it is recommended to use specialized software, for example, Plex or KodiThese programs don't just stream the file; they can also transcode the video on the fly if the TV doesn't support the container format, and automatically download movie covers and descriptions.
Why can't the TV see the files?
Often, the problem lies with the codec. The default Windows DLNA server cannot stream some modern audio formats (such as TrueHD). In such cases, installing a third-party server with built-in codecs can help. This server can convert the stream on the fly, without requiring re-encoding the file itself.
Method 3: Using third-party applications and browsers
If built-in Windows tools don't work or your TV is an older model, browsers and specialized utilities can help. The easiest option is to use Google Chrome or Yandex Browser. Open the desired video file or online movie site, click the three dots in the menu, and select "Cast." Select your TV from the list, and a browser tab will open on the big screen.
This method is convenient because it doesn't require complex network configuration. However, it only broadcasts the contents of a browser tab, not the entire desktop. For full functionality, there are emulator programs such as LetsView or ApowerMirrorThey are installed on both all-in-one PCs and (sometimes) TVs, providing a stable connection even over complex corporate networks.
Some all-in-one PC and TV manufacturers offer their own ecosystems. For example, if you have an HP all-in-one PC and a Samsung TV, the proprietary HP Smart and Samsung SmartThings utilities may be useful. They often find each other faster than standard Windows tools, using local discovery protocols.
⚠️ Note: App interfaces and menu item names may vary depending on your operating system version and TV model. Manufacturers regularly update their software, changing the location of settings. If you don't find the option described, use the search in your TV settings or refer to the official documentation for your model.
Network optimization and latency elimination
Even with ideal software settings, connection quality directly depends on the state of the WiFi network. If you notice artifacts in the picture, color separation, or hear interruptions in the sound, the channel is overloaded. The first step should be switching your all-in-one PC and TV to the 5 GHz frequency. This range is less polluted by neighboring routers and provides higher data transfer speeds.
Check if any background downloads, torrents, or large file cloud syncing are running on your all-in-one PC while you're watching. These processes can choke the video data stream. It's also a good idea to change the WiFi channel in your router settings to a less congested one, using dedicated WiFi analyzer apps for your smartphone.
If the distance between your router and your devices is long, consider using PowerLine adapters. They transmit the internet signal through your home's regular electrical wiring, allowing you to connect your TV and all-in-one PC directly to a power outlet with an Ethernet cable. This will provide the effect of a wired connection without cutting grooves in your walls.
The impact of encryption on speed
Using the outdated WPA/TKIP encryption protocol can limit Wi-Fi speeds to 54 Mbps, which is insufficient for HD video. Ensure WPA2-AES or WPA3 encryption is selected in your router settings.
Frequently Asked Questions (FAQ)
Is it possible to connect a monoblock to a TV if the TV does not have Smart TV?
Yes, it's possible. You'll need to purchase an external set-top box (TV box) running Android or Apple TV that connects to the HDMI port of a standard TV. This box will perform Smart TV functions and allow you to receive a WiFi signal from your all-in-one PC using the same Miracast or AirPlay protocols.
Why is there no sound on the TV when connected via WiFi?
Most likely, the default 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 from the list of devices. If it's not listed, try restarting the Windows Audio service or reconnecting the device.
Does connecting a TV affect the internet speed on other devices?
Yes, it does. Streaming video, especially in high definition, consumes a significant portion of your WiFi bandwidth. If you have a low-speed plan or an older router (802.11n), your speed on other devices may noticeably drop. Using the 5 GHz band minimizes this effect.
Is it safe to leave a DLNA server running?
On a home network with a strong WiFi password, this is safe. However, if outsiders can access your network (for example, through a guest network without security), they could theoretically access shared folders. It's recommended to share only specific media folders, not the entire drive, and use strong WiFi encryption.