Modern technology allows you to completely eliminate unnecessary wires and enjoy content on the big screen using wireless connections. Connecting an all-in-one PC to a TV via Wi-Fi is not just convenient, but a necessity for those who value a stylish workspace and want to stream movies or presentations without lag. Unlike older methods using HDMI cables, wireless protocols allow freedom of movement and eliminate the need to run long cables across the room.
Syncing devices may seem complicated at first glance, but Windows and macOS operating systems have long been equipped with built-in tools for this purpose. You don't need to be an experienced system administrator to set up high-definition video streaming. The key is to understand which wireless data transfer technologies your device supports and configure the network settings correctly.
In this article, we'll explore all current connection methods, from native Windows functions to third-party utilities. We'll also explore the nuances of protocol operation. Miracast And DLNA, which are the foundation of wireless multimedia. You'll learn how to avoid audio and video desynchronization, as well as what to do if your TV doesn't see your computer in the list of available devices.
Wireless image transmission technologies
Before we get started, it's important to understand the terminology, as different manufacturers use different names for similar functions. The primary standard for transmitting images from a computer screen to a TV without compression is the technology MiracastIt operates on the Wi-Fi Direct principle, creating a direct connection between devices, minimizing latency and allowing for high-definition video streaming.
To transfer media content such as movies, music or photos, the protocol is often used. DLNAUnlike Miracast, which simply mirrors your screen, DLNA lets you control file playback from your all-in-one PC using your TV as a monitor, but without having to mirror your entire desktop. This is especially convenient if you want to watch a movie while your computer is busy with background tasks.
There are also proprietary solutions from major brands that can be built into your devices. For example, Apple owners use AirPlay, and users of the Samsung ecosystem - Smart ViewThese technologies are often more stable than standard protocols, but require the appropriate equipment from a single manufacturer.
⚠️ Important: Make sure your router supports the 802.11ac (Wi-Fi 5) standard or later. On older 2.4 GHz routers, high-resolution video streaming may experience stuttering and artifacts.
What is the difference between casting and streaming?
Casting typically involves sending a link to content that the TV plays automatically, reducing the load on the PC. Streaming or mirroring transmits the video stream from the computer screen in real time, which requires a more powerful processor and a stable connection.
Preparing equipment and network
Successful setup is impossible without properly preparing the infrastructure. The first and most important requirement is that both devices are on the same local network. This means the all-in-one PC and TV must be connected to the same router, regardless of whether you're using a cable or wireless connection.
It's recommended to check that your all-in-one TV's wireless adapter drivers are up-to-date. Outdated network adapter software may not work correctly with new encryption protocols or video streaming standards. It's also worth updating your TV's firmware via the settings menu, as manufacturers frequently release patches that improve compatibility with external signal sources.
Pay attention to your Wi-Fi network frequency. For comfortable 4K video viewing, it's best to use the 5 GHz band, which is less congested and provides higher throughput. If your router is dual-band, make sure both devices are connected to the 5 GHz network, not the 2.4 GHz one.
☑️ Check before connection
Method 1: Built-in Windows function (Projection)
Windows 10 and 11 have built-in support for wireless displays, making the connection process incredibly simple. You don't need to install any additional software if both devices support the Miracast standard. To get started, open the Action Center by pressing the key combination. Win + A, and select the button Project (or Connect).
Once enabled, the system will begin searching for available devices within range. Your TV should appear in the list. When selecting a device, a connection confirmation prompt may appear on the TV screen. Accept this prompt with the remote control. After this, the image from the all-in-one PC monitor will be copied completely to the large screen.
Windows allows you to flexibly configure the projection mode. You can choose duplicate mode, which displays the same image on both screens, or extend mode, which turns the TV into a second monitor. This is convenient for presentations or when you need to display reference information on a larger screen without removing your workspaces from the main display.
⚠️ Note: The "Projecting" feature in Windows may not work if network discovery services are disabled on your all-in-one PC. Ensure that the "Private Network" profile is selected in your network settings, not "Public."
Method 2: Using DLNA and media servers
If your goal isn't to mirror your desktop, but to watch movies or listen to music stored on your all-in-one PC's hard drive, it's best to use DLNA technology. In Windows, this feature is implemented through "Media Streaming." To activate it, go to the Control Panel and find the section Media stream and put it into gear.
Once this feature is enabled, your TV will be able to access your computer's shared folders. An option corresponding to the name of your all-in-one PC or media server will appear in the Source menu on your TV screen. Once you've opened it, you'll see the folder structure and be able to launch files directly using your remote control.
For more advanced control, you can use specialized software, for example, Universal Media Server or PlexThese programs automatically transcode videos to a format supported by your TV if the original file has an incompatible codec or subtitles. This solves the problem of the TV not playing sound or video due to the file format.
Method 3: Third-party applications and utilities
When built-in tools don't work or additional features are required, third-party programs come to the rescue. One of the most popular solutions is the app LetsView or AirServerThey can be installed on a monoblock and (in some cases) on a TV, or they can work via a web interface.
These utilities often offer more advanced functionality: the ability to control a computer from a smartphone screen, draw on the screen during a presentation, and record what's happening on the screen. Some of them allow you to overcome the limitations of corporate networks, where standard protocols may be blocked by the administrator.
It's important to choose programs that support hardware acceleration. If an application encodes a video stream using the processor (CPU), the all-in-one computer may become hot and the fans may become noisy. Good software offloads the encoding task to the graphics adapter, keeping the system responsive.
| Program | Connection type | Latency | Peculiarities |
|---|---|---|---|
| Windows Connect | Miracast (Native) | Low | No installation required, built into the OS |
| LetsView | Proprietary | Average | Cross-platform, control from your phone |
| Plex | DLNA/Server | Absent | Ideal for movies, metadata library |
| Chrome Cast | Browser | Average | Works via Google Chrome browser |
When using third-party software, always check access permissions in Windows Firewall. Antivirus software can block incoming connections required to establish handshake between devices. When launching the program for the first time, be sure to allow access to private and public networks.
Setting up display and sound options
After a successful connection, fine-tuning the picture is often necessary. The all-in-one PC's resolution may differ from the TV's native display resolution, resulting in blurriness or an incorrect aspect ratio. To correct this, right-click on the desktop and select Screen parameters.
In the window that opens, select the TV (it will be designated as the second display) and in the "Resolution" section, set the value recommended by the TV manufacturer, usually this is 1920x1080 or 3840x2160You can also adjust orientation and scaling here to ensure text on a large screen is easily read from a distance of several meters.
Audio transmission deserves special attention. By default, it may continue to stream through the all-in-one PC's speakers. To change this, click the speaker icon in the system tray, select the output device, and find your TV in the list. Now all system audio will be transmitted through the TV's audio system or a connected soundbar.
Troubleshooting and troubleshooting
Even with proper setup, issues may still occur. One common problem is that the TV isn't listed as available. In this case, try rebooting the router, as multicast traffic, which is necessary for device discovery, is sometimes blocked when network equipment is left running for extended periods without rebooting.
If you see a picture but the sound is missing or out of sync, check your Wi-Fi adapter's power-saving settings. In Device Manager, find your wireless adapter, go to Properties, and under the "Power Management" tab, uncheck "Allow the computer to turn off this device to save power."
Low frame rates and choppy images often indicate a congested Wi-Fi channel. If neighboring routers are operating on the same frequency, the signal may be clogged. In this case, changing the channel in the router settings or switching to the 5 GHz band, if not already done, may help.
⚠️ Note: Menu interfaces and item names may vary depending on your TV model and operating system version. Always consult the manufacturer's official documentation if the standard paths don't work.
In some cases, antivirus software may block the connection, considering the screencasting attempt suspicious activity. If other methods fail, try temporarily disabling the firewall or adding the projector application to the exceptions list.
FAQ: Frequently Asked Questions
Is it possible to connect a monoblock to a TV without a router?
Yes, this is possible using Wi-Fi Direct or Miracast technology, if the TV supports creating its own access point. In this case, the all-in-one PC connects directly to the TV's Wi-Fi module, and the computer's internet connection will be disabled, but the image will still be streamed.
Why is the picture worse when connected via Wi-Fi than via cable?
Wireless channels are susceptible to interference and have limited bandwidth compared to HDMI. Video compression for over-the-air transmission can also reduce detail and color reproduction, which is especially noticeable on larger screens.
Does connecting a TV affect the internet speed on an all-in-one PC?
Yes, it does. Streaming video, especially in high definition, consumes a significant portion of your Wi-Fi bandwidth. This can lead to slower page loading speeds or lag in online games on other devices connected to the same network.
Does sound work over a Wi-Fi connection?
Yes, modern protocols like Miracast transmit both video and audio simultaneously. You just need to manually switch the audio output device to your TV in Windows settings after the connection is established.