Modern TVs with an operating system Android TV have long ceased to be just devices for watching cable channels. Today, these are powerful multimedia centers that can display content from any gadget on your network. Users are often faced with the need to display images from a laptop or desktop PC on a large screen, whether to demonstrate a presentation, watch a movie in high quality, or play a comfortable game.
There are several reliable methods for implementing this task, from completely wireless protocols to a classic wired connection. The choice of a specific method depends on your technical requirements, the availability of a free port HDMI and the quality of your home network Wi-Fi. In this article, we will analyze each option in detail so that you can choose the optimal solution for your configuration.
Wireless broadcasting through built-in Windows functions
The easiest way to get started without purchasing additional equipment is to use the standard functionality of the operating system Windows 10 or Windows 11. The technology Miracast allows you to transmit video and audio directly, creating a direct connection between devices. This eliminates the need for a router as an intermediary, although having a shared network often simplifies the discovery process.
First, make sure that your TV and computer are on the same local network. On your TV remote control, go to the applications menu and find the section responsible for screen mirroring. In different models it may be called differently: Screen Mirroring, Broadcast or Wireless display. Activate this mode to make the device visible for search.
On your computer, press the key combination Win + K. The Connection sidebar will appear on the right. The system will begin searching for available displays within the signal range.
As soon as your name appears in the list Android TV, click on it with the mouse. The image from the monitor should be instantly duplicated on the big screen. You can choose the operating mode: duplication, extension of the desktop or using the TV as a second monitor.
- 📡 Advantage of the method: Does not require wires or third-party software.
- ⏳ Minus: There may be a slight delay (lag) in the image, which is critical for dynamic games.
- 🔋 Requirement: Both devices must support the Wi-Fi Direct standard.
It is worth noting that the quality of the picture directly depends on the load on the air. If powerful microwave ovens are operating nearby or neighboring routers use the same channel, loss of data packets and artifacts on the screen are possible.
Using Google Cast technology (Chromecast)
Since Android TV based on the Google ecosystem, native protocol support Chromecast is one of the main advantages of the platform. This method is especially effective when working with a browser Google Chrome on the computer, allowing you to broadcast both individual tabs and the entire desktop.
Unlike Miracast, here traffic often goes through a router, which can provide a more stable picture with good Internet, but increases dependence on the speed of the local network. To get started, you will need to install the Chrome browser, if it is not already installed, and make sure that the application is running on the TV. Open the browser on your PC, click on the three dots in the upper right corner and select (Cast). A device selection window will appear. If you want to show a specific site, simply select it from the list of tabs. To demonstrate apps or games, you need to press the button Chromecast built-in.
Open your browser on your PC, click on the three dots in the upper right corner and select Cast... (Cast). A device selection window will appear. If you want to show a specific site, simply select it from the list of tabs. To demonstrate apps or games you need to press the button Sources and select Cast desktop.
This method is ideal for watching videos from websites that do not have a built-in Cast button, or to display photo albums. The sound is also transmitted synchronously with the video, which creates a completely immersive effect.
⚠️ Warning: When broadcasting your entire desktop via Chrome, the load on your computer's processor increases. This can lead to poor performance in heavy applications or games.
For the best video quality via Chromecast, make sure your router supports the 5 GHz standard - this will significantly increase the bandwidth.
Wired connection via HDMI cable
When it comes to maximum picture quality and no lag, nothing is comparable to a classic wired connection. The cable HDMI remains the "gold standard" for connecting a PC to a TV, providing transmission of an uncompressed video signal in 4K resolution and multi-channel audio.
The connection process is extremely simple: connect the computer's video card and any free port HDMI on the back of the TV. After that, on the remote control, press the signal source selection button (Source or the square icon with an arrow) and specify the corresponding input number.
Windows will automatically recognize the new device. However, for comfortable work, it is recommended to go to the screen settings (RMB on the desktop -> Screen parameters) and adjust the resolution. Often TVs have overscan (edge cutting), so you may need to enable the “Full Pixel” or “Just Scan” mode in the settings of the TV itself.
| HDMI version | Max. resolution | Refresh rate | HDR support |
|---|---|---|---|
| HDMI 1.4 | 4K (3840x2160) | 30 Hz | No |
| HDMI 2.0 | 4K (3840x2160) | 60 Hz | Yes |
| HDMI 2.1 | 8K (7680x4320) | 120 Hz | Yes (Dynamic) |
| HDMI 2.1 (VRR) | 4K | 120 Hz + VRR | Yes (for games) |
Using a cable eliminates all questions about the stability of the connection. You can play shooters, edit videos or work with graphics without the risk of sound and picture being out of sync. The only negative is the need to lay the wire across the room.
☑️ Check before connecting HDMI
Remote access and control through third-party software
Sometimes the task is not just to duplicate the screen, but to fully control the computer from the sofa. For such cases, there are specialized remote access apps, such as TeamViewer, AnyDesk or RustDesk. They are installed both on a PC and on a TV (via the Google Play Store).
This method turns your TV into a huge monitor for managing the file system, setting system parameters or running specific software. Text is entered either from the on-screen keyboard or, more conveniently, from a physical keyboard and mouse connected to the TV.
Setting usually comes down to entering the ID and password, which are generated on the computer. Once connected, you see the Windows interface directly on the TV screen. The cursor is controlled via the remote control (in mouse emulation mode) or connected USB peripherals.
This solution is often used by system administrators for quick diagnostics or by ordinary users to access the media library on a PC without having to leave their seat. The response speed here is usually lower than that of Miracast, so the method is not suitable for video content.
How to optimize TeamViewer on TV?
In the app settings on your computer, disable the Windows desktop wallpaper and visual effects. This will reduce the load on the data transmission channel and speed up the rendering of the interface on the TV.
Broadcasting media files via DLNA and local network
If your goal is not to duplicate the desktop, but to watch movies, TV series or listen to music stored on the computer’s hard drive, then technology DLNA will be the most effective solution. It allows the TV to see shared PC folders as network storage.
In Windows, this feature is called "Media Streaming". To activate it, open the control panel, find the appropriate section and enable the stream for your TV. After this, the “Media Server” source or the name of your computer will appear in the TV menu.
The advantage of the method is that the TV itself decodes the video, relieving the computer processor. You can minimize all windows on your PC or even lock it, and the movie will continue to play on the big screen. Subtitles and rewinding are supported.
For more advanced users, it is recommended to use server software, for example Plex or Jellyfin. These apps not only send files, but also transcode them on the fly, adjusting the format to the capabilities of the TV, and also download beautiful posters and descriptions of films.
⚠️ Attention: Audio and video formats must be supported by your TV. If the TV does not read the file, use servers like Plex, which convert the stream in real time.
Solving problems with latency and signal quality
Even with proper configuration, users may encounter artifacts, stuttering, or out-of-sync audio. Most often, the reason lies in an overloaded Wi-Fi channel or insufficient power of the router.
Try to restart the router and turn off other devices that consume a lot of traffic (torrents, downloads on smartphones). If you are using the 2.4 GHz band, it is highly recommended to switch to 5 GHz, as it is less noisy and provides greater channel width.
Also check the power saving settings on your computer's network card. Sometimes the system reduces the power of the adapter to save power, resulting in an unstable connection. In the device manager, find your Wi-Fi adapter, go to properties and on the "Power Management" tab, uncheck the option to allow the device to be turned off.
The stability of the wireless connection is 90% dependent on the quality of the router and the absence of physical obstacles between it, the PC and the TV.
In some cases, the problem may be in the video card drivers. Update the software to the latest version from the manufacturer's official website (NVIDIA, AMD or Intel), as updates often contain fixes for wireless display protocols.
Why doesn't the TV see the computer when you press Win+K?
Make sure that the discovery function is enabled on both devices networks. Check the network type in Windows - it should be "Private" and not "Public". Also make sure that the Connection Manager service is running.
Is it possible to play games on a PC through a TV without lags?
For comfortable gaming without visible input lag, it is best to use an HDMI cable. Wireless methods (Miracast, Chromecast) add a delay of 50 to 200 ms, which makes dynamic shooters or fighting games almost unplayable.
How to transfer sound from a PC to a TV if there is already a picture?
Click on the speaker icon in the Windows tray (near the clock). Click on the arrow or the name of the current output device and select your TV from the list. The sound will switch to the TV acoustics.
Does Android TV support connecting a mouse and keyboard?
Yes, most models support connecting USB peripherals or Bluetooth devices. This greatly simplifies navigation in the browser or when using applications for remote access.
What to do if the image is stretched or cropped at the edges?
Go to the image settings of the TV itself (not Windows). Find the "Screen Format", "Aspect Ratio" or "Image Size" option and select the "Fit to Screen", "16:9" or "Just Scan/Full Pixel" mode.