Modern Xiaomi TVs, powered by Android TV or PatchWall, offer a huge opportunity for multimedia entertainment. Using a large screen to watch movies, work with documents or run games from a personal computer is not only convenient, but also greatly improves the visual experience. Connecting a TV to a computer allows you to turn a living room into a full-fledged media center or a work office with a diagonal of tens of inches.
There are several proven methods of synchronizing devices, each with its own advantages: you can choose a wired connection for maximum stability and quality of the picture without delay, which is critical for gamers. The alternative is wireless data transfer, which eliminates unnecessary cables and allows you to quickly show content from a laptop on a large screen.
In this article, we will discuss in detail all the current ways of connecting, adjusting image and sound parameters, and methods for solving typical compatibility problems. Whether you use a desktop PC or a laptop, you will find the best solution for your hardware configuration.
Equipment preparation and cable selection
Before setting up, you need to make sure that you have the appropriate interface cable. The most common and universal standard is HDMI, which transmits both high-definition video and multi-channel sound. For modern Xiaomi TVs and computer graphics cards, it is recommended to use HDMI 2.0 or higher cables to support 4K resolution and 60Hz refresh rate.
If your computer only has DisplayPort output and your TV only has HDMI, you will need an active adapter or a special cable adapter.It is important to consider that passive adapters may not work at high resolutions. Make sure both devices are turned off before connecting the cable, although the HDMI standard supports hot connection, this can cause short-term driver failure.
⚠️ Attention: Long cables (over 3 meters) of poor quality may cause interference, screen flickering or occasional signal loss. Use active cables with signal amplifier for longer distances.
Once the devices are physically connected, turn the TV on and turn it into an external signal source mode. On the remote, press the login select button, often designated Input or the arrow square icon. In the menu that appears, select the port you have connected the cable to, such as HDMI 1 or HDMI 2.
☑️ Checking before connection
Configuring the display in the Windows operating system
Once the TV is detected by the computer as a second monitor, you need to adjust the display mode correctly. Windows uses the Win + P key combination to call up the project menu, and offers four main options for the user, each suitable for different use cases.
Duplicate fully copies the image from the main screen to the TV, which is convenient for presentations or when you need to see the picture on both the laptop and the big screen the same, but it is worth remembering that in this mode the resolution is set to the minimum value of both screens, which can reduce the picture quality on a 4K TV.
For a more comfortable viewing of movies or games, you should choose Expand mode, in which case the TV becomes an extension of your desktop, you can drag and drop browser or player windows onto the big screen while you continue to work with documents on your computer monitor, which allows you to use the system resources and screen space efficiently.
- 🖥️ Only computer screen – the image is displayed only on the PC monitor, the TV goes out (used to save energy).
- 📺 Only the second screen – the main monitor goes out, the image only works on a Xiaomi TV (ideal for watching movies).
- 🔄 Duplicate – the same image on both screens (for presentations).
- ↔️ Expand – Create a single workspace of two screens (for multitasking).
To fine-tune the settings, go to Settings → System → Display. You can position the screens according to their actual position in the room by simply dragging the rectangles with your mouse. Also, in the Additional Display settings section, it is recommended to set a refresh rate of 60 Hz or higher if your Xiaomi TV model supports HDR and high hertz.
What if there is no sound on the TV?
Wireless connection via Wi-Fi and Miracast
Miracast technology (known as Connect to a Wireless Display in Windows) allows you to broadcast images without using cables. Xiaomi Android TVs have built-in support for this technology, making the connection process as simple as possible. The main requirement is that both devices must be connected to the same Wi-Fi network.
To get started on a Xiaomi TV, you need to run a wireless projection app. Depending on the firmware version, it may be called Cast, Broadcast or Wireless Display. Once the app is launched, the device name and connection waiting status will appear on the screen. On your computer, click Win + K to find available displays.
The system will find your TV in the list of available devices. After selecting the name of the TV, a request for confirmation of the connection may appear on the screen, which must be accepted by the remote, and the latency during the wireless connection may be higher than when using a cable, which should be considered when playing games.
| Parameter | Wireless (HDMI) | Wireless (Miracast) |
|---|---|---|
| Image quality | No loss (Lossless) | Compressed (may be artifacts) |
| Delay (Latency) | Minimum (< 1 ms) | Notable (50-200 ms) |
| Stability | Tall. | Depends on the router. |
| Convenience | Requires cable. | Total freedom of movement |
If Windows' built-in connectivity fails, you can use Google Chrome's functionality. Open the browser menu, select Translate, and find your TV, a method that is convenient for displaying tabs or desktops without deep integration with the system.
Broadcasting via Google Chrome and Cast technology
Google’s ecosystem offers another efficient way to display an image, especially if you have drivers or extensions installed to work with Chromecast built-in. Xiaomi TVs are actively using this technology.
To start streaming, open the Google Chrome browser on your computer. Click on the three dots in the top right corner and select Broadcast. (Cast.) In the window that opens, you'll see a list of available devices on your network. If the TV isn't displayed, make sure it's on and on the same subnet.
It allows you to broadcast not only the browser tab, but also the entire screen or specific files. Click on the Sources button in the stream menu to select what you want to show, which can be Tab, Whole Screen or File.
⚠️ Note: When broadcasting the entire screen through Chrome, the load on the computer processor may increase, since the video is coded programmatically. 4K Video is better to use built-in apps on the TV or wired connection.
The advantage of the method is the ability to control playback from a phone or tablet if they are associated with a single Google account, and it is cross-platform and works on macOS and Linux without installing additional software other than the browser itself.
Use of third-party applications for remote access
For more complex scenarios, such as remote control of a computer from the couch or access to a low-latency desktop, you can use specialized software. Programs like TeamViewer, AnyDesk or RustDesk allow you to fully control the PC using the TV as a monitor, and a smartphone or wireless keyboard as a remote.
But home media centers are often better suited to games and video streaming, such as the Steam Link app, which is available on Xiaomi’s Google Play Store, and allows games to be streamed from computer to TV over a local network with minimal latency using video compression technology.
Another popular option is to use the DLNA protocol or SMB servers. You can share a folder with movies on your computer (right mouse button to folder → Properties → Access) and open it on your TV through a built-in Explorer or VLC for Android media player. This allows you to play files directly from your PC hard drive using the computing power of the TV to decode.
- 🎮 Steam Link – Perfect for gamers, supports controllers and has a low ping.
- 📁 SMB / DLNA — Best choice for viewing video files from your hard drive without copying.
- 🖲️ TeamViewer / AnyDesk – Suitable for office tasks and remotely configured computer.
When you set up SMB-Windows-based 10/11 It's important to make sure that the network settings enable device detection. Type the conductor on the TV into the address bar. IP-Your computer address or find it in a network environment. Access may require a Windows account login and password.
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For maximum local area network (SMB) data transfer speed, connect your computer to your router with an Ethernet cable, and your TV to your 5GHz Wi-Fi network, which will reduce buffering when viewing heavy 4K files.
Problem Solving and Lack of Signal
Despite standardization of interfaces, users often face a situation where the TV says "No signal" or the image twitches. One of the common reasons is a resolution mismatch. If the computer produces a signal that the Xiaomi TV does not support (for example, a non-standard scanning frequency), the screen will remain black.
Try to lower your computer resolution to a base 1920x1080 and 60Hz. Also check if you have the right signal source on your TV menu. Sometimes HDMI ports may not be numbered in order of physical marking, so it's worth going through all available HDMI inputs 1-3.
Sound problems are often solved by choosing the right output device in Windows settings. If the sound is coming but is interrupted, try turning off the surround sound format (Dolby Digital or DTS) settings, leaving the stereo or PCM, since not all TV models correctly decode complex formats from a PC.
⚠️ Note: If the monitor screen goes out when you connect and the image doesn't appear on the TV, it's possible that the video card can't handle two different resolutions or frequencies at the same time.
In rare cases, it helps to reset the TV settings to factory or update the firmware of the Android system. TV. Outdated software may contain bugs in the work HDMI-Wi-Fi port or module that is patched by manufacturers in new versions.
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90% of connection problems are solved by replacing the HDMI cable with a high-quality screened version or switching to a different port of the TV.