Connecting a TV to a Computer via Wi-Fi: A Complete Guide with Troubleshooting

Wirelessly transmitting images from a computer to a TV via Wi-Fi has become a standard feature of modern devices, but many users still encounter issues, from no sound to constant connection drops. In this article, we'll explore all the current connection methods, from built-in technologies Miracast And DLNA to specialized programs like Steam Link or MoonlightWe'll pay special attention to router settings, which often cause lag, and consider how to minimize delays when streaming games or videos. 4K.

It is important to understand that not all methods are equally effective: for example, Miracast Suitable for presentations, but useless for gamers due to high input lag, A DLNA doesn't support interactive content. We'll help you choose the best option based on your needs—whether it's watching movies, streaming games, or screen mirroring for work. You'll also learn which Wi-Fi router settings are critical for stable broadcasting (channel, bandwidth, QoS), and how to bypass the limitations of older TV models without Smart TV.

1. Preparation: Checking device compatibility

Before attempting to connect your PC and TV via Wi-Fi, make sure both devices support the protocol you choose. For example, for Miracast required:

• 🖥️ Computer with Windows 10/11 (or macOS With AirPlay), a video card with support Wi-Fi Direct (most models after 2015).
• 📺 TV with Miracast (usually labeled as Screen Mirroring, Wireless Display or WiDi).
• 📶 Router with support 802.11ac (or newer) for minimal delays.

To check compatibility on Windows run the command in CMD:

netsh wlan show drivers | find "Wireless Display"

If the response contains a string Wireless Display Supported: Yes, your PC is ready for MiracastOn your TV, look for the function in the menu. Settings → Network Connections → Wireless Display (names may differ Samsung, LG, Sony).

⚠️ Attention: Televisions 2018 and later often require firmware updates to work correctly with MiracastCheck the current software version in the menu. Support → Software Update.

2. Method 1: Miracast (Wireless Display) - Direct Screen

This is the simplest method for screen mirroring, but it has limitations: the maximum resolution is usually 1920×1080 at 30 Hz, and the delay reaches 50–100 ms — critical for gaming. But no router is required: devices connect directly via Wi-Fi Direct.

Instructions for Windows 11/10:

1. Turn on the TV mode Screen Mirroring (on Samsung — Smart View, on LG — Miracast).
2. On PC, click Win + K, select your TV from the list.
3. Confirm the connection on both devices.

If the TV is not displayed:

• 🔄 Restart both devices.
• 🔧 Update your video card drivers (especially important for Intel UHD Graphics).
• 📡 Make sure that the PC is enabled Wi-Fi (even if you are connected via cable).

Wi-Fi is enabled on PC and TV|

TV in Screen Mirroring mode|

Video card drivers updated|

VPN and firewalls are disabled

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3. Method 2: DLNA - media file streaming

DLNA (Digital Living Network Alliance) allows you to stream to your TV photos, videos and music, but doesn't support screen mirroring or games. The main advantage is low network load and no lag during playback.

How to set up:

1. On your TV, open the app Media player (or DLNA on the menu Net).
2. On PC:
• For Windows: turn on Streaming media V Settings → Networks & Internet → Wi-Fi → Additional network settings.
• For macOS: use iTunes or Plex Media Server.

Select folders to share (eg. Video, Music).

Restrictions DLNA:

4. Method 3: Steam Link – for gamers

If you need to stream games from your PC to your TV, Steam Link — the best choice among wireless solutions. The program uses proprietary compression algorithms, which reduces latency to 20–40 ms (with good Wi-Fi).

Requirements:

• 🎮 A computer with installed Steam and the game.
• 📺 TV with Android TV (or a prefix like NVIDIA Shield).
• 📶 Router with support 5 GHz and channel 160 MHz (recommended).

Instructions:

1. Install the application Steam Link on TV from Google Play.
2. On PC in Steam go to Settings → Remote Play and turn it on Enable Remote Play.
3. Connect the gamepad to your TV (for example, Xbox Controller via Bluetooth).
4. Launch the game on PC and select Stream on TV.

⚠️ Caution: When using Steam Link Avoid downloading files on your PC simultaneously over Wi-Fi, as this can cause FPS drops. For stability, close background programs such as uTorrent or Discord.

How to reduce lag in Steam Link?

1. In Steam Link settings, select Speed ​​priority instead of Quality Priority.

2. Set the bitrate to 15–20 Mbps (more is not always better).

3. Turn on the router QoS and prioritize traffic from ports 27015–27030 (used by Steam).

4. Connect your PC to the router via cable, and leave the TV on Wi-Fi.

5. Method 4: Moonlight - an alternative for NVIDIA

Moonlight - is an open implementation of the technology NVIDIA GameStream, which only works with video cards NVIDIA (series GTX 6xx and newer). Compared to Steam Link, it offers better image quality and lower latency (10–30 ms), but requires more complex configuration.

How to set up:

1. Install on PC NVIDIA GeForce Experience and turn it on GameStream in the settings.
2. Add games to your library GeForce Experience (even if they are not from Steam).
3. Install on your TV Moonlight (available for Android TV, Samsung Tizen, LG webOS).
4. Connect to your PC by entering its local IP address (you can find out using the command ipconfig V CMD).

Advantages Moonlight:

• 🎮 Support 4K@60Hz (with sufficient network bandwidth).
• 🔊 Sound transmission 5.1 without losses.
• 🖱️ Ability to connect a mouse/keyboard to the TV to control the PC.

6. Method 5: Chromecast (Google Cast) - for streaming

If you have a device Google Chromecast (or a TV with built-in Google TV), you can broadcast your PC screen through your browser Chrome or specialized applications. This method is universal, but has a delay 100–200 ms.

Instructions:

1. Connect Chromecast to the TV and set it up through the app Google Home.
2. On your PC, open Chrome, click ⋮ → Broadcast.
3. Select Broadcast tab or Broadcast your screen.
4. Confirm connection to Chromecast.

Restrictions:

• 🚫 No sound during broadcast DRM-protected content (for example, Netflix in the browser).
• 🖼️Quality is limited 1080p@30Hz.
• 🎮 Not suitable for gaming due to high input lag.

7. Optimizing your router for uninterrupted streaming

Even the most advanced connection method will slow down if your router isn't configured correctly. Here are the key settings to check:

How to check channel load:

1. Install the application on your phone Wi-Fi Analyzer (For Android) or NetSpot (For iOS/macOS).
2. Select a channel with a minimum number of intersections.
3. Configure your router via the web interface (usually 192.168.1.1 or 192.168.0.1).

⚠️ Attention: If your router does not support 5 GHz or has a maximum channel width 20 MHz, wireless broadcasting in 4K or games through Moonlight/Steam Link will be impossible. In this case, consider purchasing a standard router Wi-Fi 6 (For example, TP-Link Archer AX6000 or ASUS RT-AX88U).

8. Solving common problems

If the image is lagging, the sound is missing, or the connection keeps dropping, use these instructions:

• 🔌 No connection:
  • Check that your PC and TV are connected one network (not to different ranges 2.4 GHz/5 GHz).
  • Disable VPN and firewalls (eg. Kaspersky may block Miracast).
• 🐢 Lags/stuttering:
  • Reduce the broadcast resolution (for example, from 4K to 1080p).
  • Switch from 5 GHz on 2.4 GHz, if walls interfere with the signal.
  • Close background programs that consume traffic (Torrent, Skype).
• 🔇 No sound:
  • IN Windows check that in Playback devices The correct audio device is selected.
  • For DLNA Make sure the files have a supported audio codec (AAC, MP3).

What should I do if my TV doesn't support Miracast?

1. Buy an external adapter Miracast (For example, Microsoft Wireless Display Adapter or ScreenBeam).

2. Use Google Chromecast or Amazon Fire TV Stick as an intermediary.

3. Connect your PC to your TV via HDMI and use Steam Link/Moonlight for streaming over a local network.

FAQ: Frequently Asked Questions

Is it possible to connect an old TV without Smart TV?

Yes, you will need an external device for this:

• 📱 Android set-top box (For example, Xiaomi Mi Box S) - supports Miracast, Steam Link, Moonlight.
• 🖥️ Google Chromecast — for broadcasting via a browser.
• 🎮 NVIDIA Shield TV - optimal for gamers (supports 4K@60Hz via Wi-Fi).

The cost of such devices is from 3,000 to 15,000 ₽.

Which method is best for watching 4K movies?

Optimal options:

1. DLNA - if the files are stored on a PC and interactivity is not required.
2. Plex or Kodi — for an organized media library with subtitles.
3. Moonlight - if you need to broadcast 4K with minimal losses (required NVIDIA).

Avoid Miracast - it is limited 1080p.

Why is the image lagging even though the Wi-Fi speed is high?

The reasons may not be in the speed, but in:

• 📶 Interference: check the Wi-Fi channel in Wi-Fi Analyzer.
• 🖥️ PC performance: during broadcast 4K a powerful processor is required (eg Intel Core i5 or Ryzen 5).
• 🔌 Router power supply: If it overheats, the speed drops.

Solution: Try connecting your PC to the router via cable and leave the TV on Wi-Fi.

Is it possible to control a computer from a TV?

Yes, but only through:

• Moonlight - supports mouse/keyboard connected to TV.
• Steam Link - with a gamepad or keyboard.
• TeamViewer or AnyDesk — for full remote control (but with delays).

Miracast And DLNA do not support feedback.

How to reduce audio delay?

Audio delay (lip sync) occurs due to:

• 🎵 Codecs: use PCM instead of Dolby Digital.
• 📡 Networks: switch to 5 GHz or reduce the bitrate.
• 🖥️ PC settings: V Windows turn off sound effects in Control Panel → Sound → Enhancements.