Many users are familiar with the situation where a computer and TV are in the same room, connected to the same network, but completely ignore each other. This is a classic problem that often occurs after a system update, a router change, or simply reinstalling drivers. Windows 10 has powerful multimedia capabilities, but their operation directly depends on the correctness of network settings and compatibility of data transfer protocols.
Before you panic and start looking for hardware problems, it's worth understanding the basic principle of streaming. The computer acts as a server (signal source), and Smart TV — as a renderer (receiver). For a successful connection, they must "see" each other on the local network, which requires several conditions to be met simultaneously. If even one parameter is incorrect, for example, the network type is defined as "Public" instead of "Private," device discovery is blocked at the operating system level.
In this article, we'll take a detailed look at all possible causes of failure, from simple user errors to complex network conflicts. You'll learn how to properly configure transmission protocols, check Windows services and update network drivers to enjoy content on the big screen wirelessly.
Checking the physical topology and network settings
The most common error users encounter is devices being on different subnets. For Windows 10 to see the TV, both devices must be connected to the same router. If you have a primary router and an additional repeater (signal booster) at home, make sure both devices are connected to the primary access point and not spread across different network segments.
It's also worth paying attention to the frequency range. Many modern routers operate in two bands: 2.4 GHz And 5 GHzAlthough theoretically devices on different bands of the same network should be able to see each other, in practice, some older TV models or specific client isolation settings may prevent this. Ideally, connect both the PC and TV to the same frequency band for testing.
A critical aspect is the network profile in the operating system itself. Windows 10 may assign new connections the "Public Network" profile by default, which automatically hides your computer from other devices for security reasons. You need to forcefully change this status.
⚠️ Important: If you're using a guest Wi-Fi network (Guest Network) enabled on your router, devices on it are isolated from each other by design. Connect devices only to the main network.
To change the network profile, follow these steps:
- 📡 Click the Wi-Fi icon in the tray and select "Properties" for your connection.
- 🔒 In the "Network profile type" section, switch the radio button to "Private."
- ✅ Make sure the "Make this computer discoverable" option is enabled.
After changing the profile, the system will apply the new firewall rules, and the computer will become visible to local devices. This is the foundation without which further configuration is impossible. DLNA or Miracast doesn't make sense.
Setting up sharing options in Windows
Even if a network is designated as private, sharing features can be disabled manually or by third-party antivirus software. Windows 10 provides flexible tools for managing which resources other devices can see and how. We need to enable network discovery and file sharing.
Go to Control Panel → Network and Internet → Network and Sharing Center. In the left menu, select Change advanced sharing settings. Here you'll see profiles for private and guest networks. In the private profile, you'll need to enable all the discoverability switches.
Pay special attention to the "Turn on automatic configuration of network-connected devices" option. This feature allows Windows to automatically establish connections to media devices, such as TVs and game consoles, without manually entering PINs each time.
netsh advfirewall firewall set rule group="Network Discovery" new enable=YesThis command can be run from an elevated command prompt to ensure that device discovery traffic is allowed if the GUI fails.
⚠️ Note: Some antivirus packages (Kaspersky, ESET, Avast) have their own built-in firewalls that can block local networks, ignoring Windows settings. Check the network protection status in your antivirus interface.
Don't forget to enable file and printer sharing. Without this permission, your computer may be visible on the network, but it won't be able to send media to the renderer. After making all changes, be sure to click the "Save Changes" button at the bottom of the page.
Windows services and system components
Dedicated services in the operating system are responsible for detecting multimedia devices. If one of them is stopped or is experiencing errors, the TV will disappear from the list of available devices for streaming. In Windows 10, this is handled by a set of services related to UPnP and SSDP.
To check, open the Run window (Win+R) and enter the command services.mscIn the list that opens, find the "Function Discovery Resource Publication" service. This is the service most often responsible for problems. By default, it may be configured to start manually, which is insufficient for stable operation.
Double-click the service and change the startup type to "Automatic." Then click "Start" if the service is stopped. We recommend performing a similar procedure for the "Host Network Service."
| Name of the service | Launch type | Status | Influence |
|---|---|---|---|
| Feature Discovery Provider | Automatically | Works | Registering a PC on the network |
| Network List Service | Automatically | Works | Displaying devices |
| Media Server (WMPNetworkSvc) | Manual/Auto | Stopped | Streaming via DLNA |
| SSDP Service | Manually | Works | Search for UPnP devices |
| Table of key services for DLNA and Miracast | |||
It's also worth checking the Windows Media Server service. It doesn't have to be running all the time, but it should start when you try to stream. Make sure it's not blocked or completely disabled.
What to do if services do not start?
If you receive an error (code 1068 or similar) when trying to start a service, this may indicate corrupted system files. Try running the Command Prompt as administrator and running sfc /scannow to restore the integrity of the operating system.
After restarting services, it is recommended to reboot the computer. Changes to the registry and service configurations often take effect only after a full system power cycle.
Problems with network adapter drivers
Outdated or malfunctioning Wi-Fi adapter drivers are a common cause of network instability. Windows 10 can automatically detect drivers, but they aren't always optimal for specific hardware, especially when it comes to specific chipsets or the new Wi-Fi 6 standards.
Open "Device Manager" from the Start button context menu. Find the "Network Adapters" section and select your wireless module. Open the Properties and go to the "Driver" tab. Here you can see the development date and version.
If the driver is very old or, conversely, was recently updated and problems started, try rolling back or updating. It's best to download the latest driver from the official website of the laptop or motherboard manufacturer rather than relying on Microsoft's automatic search.
- 💾 Download the driver from the manufacturer's website (Intel, Realtek, Qualcomm Atheros).
- 🔧 Uninstall the current device in Device Manager (right-click → Uninstall device).
- 🔄 Restart your PC and reinstall the downloaded driver.
Also, in the driver properties, on the "Power Management" tab, uncheck "Allow the computer to turn off this device to save power." This will prevent the adapter from accidentally disconnecting or going into sleep mode, which often results in the TV being disconnected from the network.
Setting up TV and transmission protocols
The problem may lie not only with the computer, but also with the TV's settings. Different manufacturers call their signal reception functions differently. For Samsung, it may be Smart View, LG has — LG TV Plus or simply "Connect to PC", Sony has a built-in Chromecast or Miracast.
Make sure DLNA is enabled on your TV. In the network settings menu, find "DLNA" or "Media Player" and ensure it's enabled. Some models require manual connection confirmation upon first startup: the TV screen may ask "Allow computer access?"
If you plan to use Miracast (mirroring your entire screen, not just files), make sure it's enabled in the signal sources. On the remote, press the Input/Source button and select "Screen Mirroring," "Cast," or "Wireless Display." The TV should enter connection standby mode.
⚠️ Note: Smart TV interfaces (Tizen, WebOS, Android TV) are updated regularly. The layout of menu items may change. If you can't find a setting, check the official instructions for your specific model on the manufacturer's website.
Android TV owners should know that the built-in Cast feature works via the Google Cast protocol. In this case, your computer must support Chrome Cast technology or use the Google Chrome browser to cast tabs.
☑️ Connection diagnostics
Using third-party software and alternatives
If standard Windows 10 tools fail to establish a connection, or File Explorer's functionality isn't sufficient, consider using specialized software. Third-party media servers often offer more flexible codec settings and are better at detecting devices in complex networks.
One of the most popular solutions is the program PlexIt creates a beautiful interface with cover art and descriptions for your movies, turning your computer into a fully-fledged home theater. Installing Plex Media Server on your PC and the Plex app on your TV solves 90% of format compatibility issues.
Another easy option is a utility Universal Media Server or classic DLNA ServerThey don't require any complicated setup and simply share folders, making them visible to any device on the network that supports the DLNA standard.
You can use the Connect app built into Windows 10 to cast your screen (Miracast), but if that doesn't work, try third-party emulators or apps from your TV manufacturer, such as Samsung Smart View for PC.
Frequently Asked Questions (FAQ)
Why can the TV see the phone but not the computer?
The problem is most likely with your Windows network profile. Mobile devices often use protocols that are less sensitive to access rights, or your phone may have an app from the TV manufacturer that is forcibly searching for the device. Check that network discovery is enabled in Windows and the network profile is set to "Private."
Is it possible to connect a computer to a TV if the router does not support 5 GHz?
Yes, you can. DLNA and Miracast protocols work perfectly on the 2.4 GHz frequency. However, the data transfer rate will be lower, which may cause stuttering when playing high-definition (4K) video. For Full HD (1080p), 2.4 GHz is usually sufficient.
The TV asks for a PIN code when connecting, where can I get it?
This code is displayed on the TV screen when you attempt to connect. You'll need to enter it in the notification window that appears on your computer. If the code doesn't appear, check your TV's security settings—it may be set to "All Permitted" or, conversely, manual entry.
Why did the sound disappear when connected via Wi-Fi?
When connecting via Miracast, audio should automatically switch to the TV. If this doesn't happen, click the speaker icon in the Windows tray and select your TV from the list of playback devices (often referred to as the TV model or "Wireless Display"). For DLNA, the TV handles audio playback when playing a file.