Modern technologies allow you to completely eliminate unnecessary wires, turning your living room into a full-fledged multimedia center. Screencasting Connecting your laptop or desktop PC to a large TV display opens up new possibilities for watching movies, presentations, and gaming. You no longer need to worry about long HDMI cables when both devices support wireless connectivity.
However, the setup process can seem complicated due to the variety of operating systems and device manufacturers. There are different data transfer protocols, such as Miracast, DLNA And Google Cast, each with its own unique characteristics. In this article, we'll explore all the current methods for establishing a stable connection between your computer and TV using only your home Wi-Fi network.
Before setting up, make sure your router is working properly. A high-quality wireless signal is essential for smooth video streaming without lag or artifacts. If the network is unstable, even the most accurate device configuration will not produce the desired results.
Technical requirements and equipment preparation
For a successful wireless connection, it's crucial that both devices are on the same local network. This means that both the computer and TV must be connected to the same router. If you have a dual-band router, it's advisable to use a frequency 5 GHz, as it provides higher throughput.
Check if your TV supports Smart TV. Without a built-in operating system or a dedicated receiver (such as Chromecast or Apple TV), you won't be able to connect your PC directly via Wi-Fi. Older models will require external adapters.
⚠️ Important: Make sure the "Guest Network" feature is not enabled on your router for primary devices. Isolating clients in guest mode often prevents devices from discovering each other on the local network.
It's also worth updating the wireless adapter drivers on your computer. Manufacturers frequently release patches that improve connection stability and compatibility with various broadcast protocols. This is especially true for Windows 10 and 11, where system updates can conflict with older driver versions.
To check compatibility, you can use the built-in diagnostic tools. In Windows, this is done via the command line, where you need to enter the command netsh wlan show driverIn the list that appears, find the line "Supported Hosted Network"—a value of "Yes" confirms the ability to create an access point or receive a signal.
Using the built-in Connect to a Wireless Display feature in Windows
The easiest and fastest way to stream an image is to use the native Windows operating system function. Technology Miracast It is built into most modern TVs and PCs, allowing you to transmit images without installing additional software.
To get started, press the key combination Win + K on the keyboard. The "Connection" panel will open on the right, where the system will begin searching for available devices. If the TV is turned on and in connection standby mode (often in Source or Input mode), it will appear in the list.
- 📺 Select the name of your TV from the list of available devices.
- 🔗 Wait for the connection request that may appear on the TV screen and confirm it with the remote control.
- ⚙️ Once connected, you can choose the operating mode: screen mirroring or desktop extension.
If the device is not found, the receiver app may not be running on your TV. On Samsung models, it's called Screen Mirroring, on LG — Smart Share, and on Sony and Philips, it's often built into the Android TV system by default. Activate the corresponding function in the signal sources menu.
☑️ Check before connecting Miracast
It's important to note that Miracast creates a direct Wi-Fi Direct connection between devices. This means traffic doesn't go through the router, which reduces latency, but it can put a strain on your computer's Wi-Fi module. In some cases, this can lead to a decrease in internet speed on the PC while streaming.
Setting up DLNA for media streaming
Protocol DLNA (Digital Living Network Alliance) is not designed for full screen mirroring, but for streaming media files. It's ideal if you want to watch a movie from your computer's hard drive on your TV in high quality without straining your PC's processor.
To enable this feature in Windows, go to Settings → Network & Internet → Status. Find Sharing options and enable network discovery and file and printer sharing. Then, open Streaming media settings and allow access to your TV.
Once configured, you can simply right-click the video file, select "Cast to device," and select your TV. The system will automatically convert the stream to a TV-readable format and begin playback.
| Parameter | Miracast | DLNA | Google Cast |
|---|---|---|---|
| Transmission type | Screen mirroring | Media files only | Broadcast tabs/files |
| Delay | Minimum | Absent | Average |
| Quality | Depends on the signal | Original file | Depends on the codec |
| Control | From PC | From the TV remote control | From a PC or phone |
⚠️ Note: When streaming large 4K files via DLNA over Wi-Fi, stuttering may occur if the signal is unstable. In such cases, it is recommended to use a cable connection or reduce the source bitrate.
For more advanced media library management, you can use third-party servers such as Plex or JellyfinThey provide a user-friendly interface with movie covers and descriptions, turning your computer into a fully-fledged home theater.
Broadcasting via Google Chrome browser
If your TV is equipped with Android TV or has built-in Chromecast support, you can use the Google Chrome browser to cast. This method is convenient because it works cross-platform and doesn't require complex Windows setup.
Open the Chrome browser on your computer and click the three dots in the upper-right corner of the menu. Select "Cast." The browser will scan the network and suggest available devices to connect to.
What to do if Chrome doesn't see the TV?
Make sure your antivirus or firewall isn't blocking local connections. Try temporarily disabling network protection or adding an exception for the chrome.exe process. Also, check that browser extensions don't conflict with the cast function.
In the window that opens, you can choose what to broadcast: a single tab, the entire desktop, or a specific media file. When you select a tab, the image is transmitted in high quality, optimized for the web, making it convenient for presentations or watching online videos.
A unique feature of this method is that it uses the internet connection for some services if the content is not local. However, for local files and tabs, the internal Wi-Fi network is used. Image quality is often higher than with Miracast, thanks to hardware encoding in the browser.
Troubleshooting connection and latency issues
A common problem with wireless streaming is audio and video desynchronization or intermittent connection interruptions. This is usually due to airwave congestion or insufficient signal strength. Try moving the router closer to the TV or using a Wi-Fi repeater.
If the image is choppy, try lowering the output resolution on your computer. Go to the display settings (Settings → System → Display) and select the resolution 1920×1080 instead of 4K. This will significantly reduce the load on the data transmission channel.
- 🔄 Restart your router and both devices to clear the network settings cache.
- 📡 Switch your TV and PC to the 5 GHz frequency if your router supports dual-band operation.
- 🛑 Close background programs on your PC that actively use the internet (torrents, downloads).
In some cases, disabling power saving for your Wi-Fi adapter can help. Go to Device Manager, find your network adapter, open its properties, and in the Power Management tab, uncheck "Allow the computer to turn off this device to save power."
Comparison of methods and selection of the optimal option
The choice of connection method depends on your specific needs. For business presentations and software demos, Miracast is best, as it ensures minimal cursor lag. For watching high-quality movies, DLNA or HDMI are preferable to avoid compression artifacts.
Apple device owners should consider using AirPlay if their TV supports this protocol (e.g., new Samsung, LG, and Sony models). This provides the best integration for the macOS and iOS ecosystems, allowing you to screencast from an iPhone or MacBook as easily as from a Windows PC.
Please remember that TV software is updated regularly. Menu interfaces and function names may change. Always consult the official documentation from your model's manufacturer if the standard methods don't work.
Frequently Asked Questions (FAQ)
Is it possible to screencast if the TV is not Smart TV?
Yes, you'll need to purchase an external set-top box, such as a Google Chromecast, Apple TV, or Android box. These devices connect to the HDMI port of a standard TV and add Smart TV functionality, allowing you to stream over Wi-Fi.
Why is there no sound during the broadcast?
Most likely, your system doesn't have a default audio output device selected. Click the speaker icon in the Windows system tray, select the output device, and select your TV. If it's not listed, check your sound drivers.
Does broadcasting affect internet speed?
When using Miracast for screen mirroring, the internet is not used; traffic flows within the local network. However, when streaming online video (YouTube, Netflix) or using Google Cast, the internet bandwidth is heavily consumed.
How to remove image lag while gaming?
It's impossible to completely eliminate lag over Wi-Fi. Using an HDMI cable is critical for gaming. If this isn't possible, enable "Game Mode" on your TV, which disables unnecessary image processing and reduces lag.