How to Use a TV as a Monitor via Wi-Fi in Windows 10: A Complete Guide

Connecting your TV to your computer via Wi-Fi opens up new possibilities for enjoying a large screen without the hassle of cables. Unlike a traditional HDMI connection, wireless streaming allows you to place devices in different rooms, while maintaining the mobility of your laptop or PC. However, not all users know that modern TVs Samsung, LG, Sony Bravia and others support the function wireless screen mirroring through technology Miracast or DLNA.

In this article, we'll cover all the available methods for connecting a TV to Windows 10 via Wi-Fi—from built-in tools to third-party apps. You'll learn how to set up lag-free streaming, what limitations exist for different TV models, and how to overcome common connection errors. We'll pay special attention to image quality optimization and sound synchronization to use the TV as a full-fledged monitor for games, movies or presentations.

If your TV was released after 2016, it most likely supports at least one wireless protocol. Older models will require additional adapters or software solutions. But in any case, connection is possible, and we'll show you how to do it as easily as possible.

1. Checking the compatibility of your TV and computer

Before you begin setup, make sure your devices support wireless streaming. Modern TVs Smart TV usually equipped with a built-in module Miracast (aka Wi-Fi Direct), but it requires appropriate support from the computer to work.

On Windows 10, checking is simple:

1. Click Win + R, enter dxdiag and confirm the launch.
2. In the window that opens, go to the tab Save all... (Save All Information).
3. In the saved file, find the line MiracastIf there is one nearby Available, with HDCP - your PC is ready to connect.

For your TV, check if this feature is available. Screen Mirroring (or similar) in the settings menu. It may have different names depending on the brand:

• 📺 Samsung: Smart View or Screen Mirroring
• 📺 LG: Screen Share (in the section Net)
• 📺 Sony Bravia: Miracast or Wireless Display
• 📺 Xiaomi: Wireless display (V Settings → Connection and Sharing)

If your TV does not support Miracast, an alternative technology is DLNA (for streaming media files) or third-party applications like Steam Link for games. We'll talk about them in the following sections.

⚠️ Note: Some laptops with integrated graphics Intel UHD may not support Miracast at higher resolutions 1920×1080Check the limitations for your model on the manufacturer's website.

2. Connect via Miracast (built-in Windows 10 feature)

Miracast is the most reliable way to mirror your screen over Wi-Fi without additional software. It works on a point-to-point basis, creating a direct connection between your PC and TV. Its main advantage is minimal latency (approximately 30-50 ms), which is critical for watching videos or presentations.

Connection instructions:

1. Activate the mode on your TV Screen Mirroring (see section 1).
2. On your computer, open Settings → System → Display.
3. Scroll down and select Connect to a wireless display.
4. The name of your TV will appear in the list of available devices - click on it.
5. Confirm the connection on both devices (a PIN may be required).

Once successfully connected, your computer screen will be mirrored on your TV. To change the display mode (duplicate, extend, or show only on TV), use the following combination: Win + P.

The TV and PC are connected to the same Wi-Fi network (not required, but recommended for stability)

The TV's power saving mode is disabled (this may cause the connection to be interrupted)

The video card drivers on the PC have been updated (especially for NVIDIA/AMD)

The screen resolution on your PC does not exceed the maximum for your TV (usually 3840×2160 (for 4K models)-->

If your TV does not appear in the list of devices:

• 🔄 Reboot the router and both devices.
• 🛠️ Update your PC's Wi-Fi adapter drivers via device Manager.
• 📶 Make sure your TV is not connected to a guest network (some models block Miracast in this mode).

⚠️ Note: When connecting via Miracast, audio is sent to the TV by default. If audio doesn't play, check your Windows audio device settings (Settings → System → Sound).

3. Alternative methods: DLNA and third-party applications

If Miracast isn't supported or is unstable, try alternative methods. These are suitable for streaming media files, games, or mirroring your desktop, but they require fewer hardware requirements.

Method 1: DLNA for watching movies and photos

1. Turn on the function on your TV DLNA (usually in the section Network → Home Network).
2. Install a server program on your PC, for example, Plex or Kodi.
3. Add folders with media files to the program library.
4. On your TV, select the source DLNA server — a list of available files will appear.

DLNA limitation: only media files (videos, music, photos) can be streamed, not the entire PC screen. Desktop mirroring requires other solutions.

Method 2: Screen Streaming Apps

For installation Steam Link:

1. Download the app to your TV via Google Play Store (For Android TV) or App Store (For Apple TV).
2. Install Steam on PC and turn it on Settings → Remote Play → Enable Remote Play.
3. Connect the controller (eg. Xbox or DualShock) to the TV.
4. Launch Steam Link on TV and select your computer.

4. Configuring broadcast quality and eliminating delays

Even with a successful connection, users often encounter issues such as choppy video, audio out of sync, or low resolution. These issues can be resolved by adjusting connection settings.

Miracast optimization:

• 🎮 For games: set the resolution 1920×1080 and frequency 60 Hz in Windows display settings.
• 🎥 For movies: select 24 Hz (if TV supports) for smooth playback.
• 🔊 For sound: in Control Panel → Sound Select TV as the default device.

Eliminating delays:

1. Connect your PC and TV to the router via cable (if possible) - this will reduce ping.
2. Enable the mode in your router settings. 802.11ac (5 GHz) and turn it off 802.11b/g (2.4 GHz).
3. Close background programs that consume traffic (torrents, cloud synchronizations).
4. IN Settings → System → Display → Graphics Disable hardware acceleration for browsers.

Why does the image lag even at 5 GHz?

The problem may lie in your router settings. Some models automatically switch devices to 2.4 GHz to save power. Go to your router's control panel (usually 192.168.1.1) and in the section Wi-Fi → Wireless Settings Bind your TV's MAC address to the 5GHz band.

Critical Information: On TV LG With webOS Versions below 4.0 may not support Miracast for Windows 10. In this case, use the app LG TV Plus for screen mirroring via USB cable (not Wi-Fi).

5. Solving common connection errors

Even with proper settings, connections may be interrupted or not established. Let's look at the most common errors and how to fix them.

Error: "This device does not support Miracast."

• 🖥️ On PC: Update your graphics card and Wi-Fi adapter drivers via device Manager.
• 📺 On your TV: reset your network settings to factory defaults (Settings → General → Reset).
• 🔌 Check that the router is in the enabled mode WMM (Wi-Fi Multimedia) - required for Miracast.

Error: "No sound on TV"

1. Click Win + X → Control Panel → Sound.
2. Find the device with the name of your TV, right-click and select Use as default.
3. If the device is missing, update your sound card drivers.

Error: "Connection will be lost in 1-2 minutes"

⚠️ Note: On some TVs Samsung (series JU6400, KU6000) The built-in power saving timer turns off the Wi-Fi module when there is no activity. Disable this feature in Settings → General → Eco Mode.

If none of the methods helped, try alternative software:

• 🎯 AirServer — paid software for receiving Miracast on a PC (if you need to broadcast from your phone to TV).
• 🎯 5KPlayer — free DLNA server with AirPlay support for Apple TV.

6. Using the TV as a second monitor (extended mode)

By default, Windows 10 mirrors your screen to your TV, but you can set it up as second monitor to expand your workspace. This is convenient for multitasking: for example, you can have a browser open on your PC and a video or presentation on your TV.

How to set up advanced mode:

1. After connecting via Miracast, click Win + P and select Expand.
2. Open Settings → System → Display.
3. Drag the second screen (TV) icon to the desired position relative to the main one.
4. Adjust the resolution: for Full HD select 1920×1080, for 4K - 3840×2160 (if supported).

For the advanced mode to work correctly:

• 🖱️ Use a Bluetooth mouse—it will move smoothly between screens.
• 📏 Set the same scale on both displays (Settings → Display → Scale).
• 🔄 If the cursor gets stuck on the screen border, update your graphics card drivers.

7. Optimization for games and videos: reducing lag

Wireless streaming isn't ideal for fast-paced gaming or high-definition video, but it can be optimized. The main parameters that affect latency are: permission, bitrate And codec type.

Game settings (via Steam Link):

• 🎮 In the settings Steam select Settings → Remote Play → Advanced.
• 📉 Install Target bitrate on 15 Mbps (for 1080p) or 30 Mbps (for 4K).
• 🔄 Turn on Hardware encoding (video card required) NVIDIA/AMD with support NVENC/AMF).
• 🎛️ Disable post-processing in games (for example, Ambient Occlusion or Motion Blur) - this will reduce the load on the network.

Video settings (via Miracast):

Parameter	Recommended value	Explanation
Permission	1920×1080	4K requires a stable 5 GHz signal
Refresh rate	60 Hz	30Hz may cause video stuttering
Codec	H.264	H.265 provides better compression, but not all TVs support it
Bitrate	10-20 Mbps	Higher - better quality, but more lags

To test the delay, use the website https://www.testufo.com — run the test Input Lag and compare the response time on your PC and TV. If the difference exceeds 100 ms, try other protocols (e.g. Moonlight for games).

8. Wireless connection security

Screencasting over Wi-Fi can be vulnerable to data interception, especially if you're using a public network. To secure your connection:

Basic safety precautions:

• 🔒 Use WPA3 on the router (or at least WPA2).
• 🌐 Disable the feature WPS - It makes it easier to hack the network.
• 📡 Create a separate network for broadcasting (guest network) with a unique password.
• 🔄 Update your router and TV firmware regularly.

Additional settings for Miracast:

1. IN Settings → Network & Internet → Wi-Fi → Manage known networks delete old connections.
2. Turn it off in your TV settings. Remote control (if you don't use it).
3. For corporate networks, use a VPN before connecting Miracast.

If you are transmitting sensitive data (such as documents or passwords), it is better to use wired connection (HDMI) or specialized solutions like TeamViewer with encryption.

⚠️ Note: Some TVs Sony Bravia (2017-2019 models) keep the history of connected Miracast devices open. After use, clear the list in Settings → Network → Connection History.

FAQ: Frequently asked questions about connecting your TV to a PC via Wi-Fi

My TV doesn't support Miracast. Are there any alternatives?

Yes, you can use:

• Google Chromecast - connects to the HDMI port and broadcasts the screen through Google Chrome (function Transmit).
• Apple TV — for owners Mac or iPhone (technology AirPlay).
• USB-WiFi adapters (For example, Microsoft Wireless Display Adapter) - adds Miracast support to older TVs.

Also check if your TV supports it DLNA - this will allow you to stream media files without screen duplication.

Why is there a sound delay when connecting via Wi-Fi?

Audio delay (desynchronization) occurs due to:

• Low network bandwidth (switch to 5GHz).
• Use legacy audio codecs (in Windows settings, select LC-AAC instead of Dolby Digital).
• Background processes on your PC (close programs that use sound, for example, Discord or Skype).

In most cases, manual sound synchronization in the TV settings (section Sound → Audio Delay).

Is it possible to play online games via Wi-Fi on TV?

Technically yes, but with some caveats:

• 🎮 Shooters (CS:GO, Valorant): not recommended - even a 50ms delay is critical.
• 🎮 RPG (The Witcher, GTA V): possible if the bitrate is not lower than 20 Mbps.
• 🎮 Turn-based strategy (Civilization): fits perfectly.

For online games it is better to use Steam Link with setting Speed ​​priority or wired connection.

How to connect a TV to a PC if they are in different rooms?

For stable broadcasting through walls:

1. Use Mesh system (For example, TP-Link Deco) to enhance the signal.
2. Connect your PC to the router via cable and your TV via 5GHz Wi-Fi.
3. Reduce the broadcast resolution to 1280×720 to reduce the load.

If the signal is weak, try Powerline adapters (Internet transmission via electrical wiring).

Why doesn't my TV appear in the list of devices to connect to?

Reasons and solutions:

• 🔌 If your TV and PC are connected to different networks, connect them to the same router.
• 🔄 The TV is not in the "Off" mode. Screen Mirroring — check the settings.
• 🖥️ The service is disabled on the PC Wireless Display - run it through services.msc.
• 🛠️ Your Wi-Fi adapter drivers are out of date - download the latest ones from the manufacturer's website (Intel, Qualcomm, Realtek).