Modern multimedia entertainment is hard to imagine without the integration of personal computers and large screens. Streaming video content, photos, or presentations to a TV eliminates the need for long HDMI cables, which often get tangled and spoil the home's decor. Wireless technologies today allow for image transmission with a latency virtually imperceptible to the human eye, ensuring a stable, high-definition picture.
There are several proven ways to establish a connection between devices, and the choice of a specific method depends on your computer's operating system, the TV's firmware version, and the supported data transfer standards. Wireless network must work correctly, and both devices must be on the same local network segment to successfully discover each other. In this article, we'll cover all the current methods, from built-in Windows functions to third-party tools.
Before proceeding with the settings, make sure that your router supports the standard Wi-Fi 5 (802.11ac) or newer, as this is critical for transmitting heavy video streams without buffering. Older standards may struggle to handle 4K video streaming, causing stuttering and audio desync. We'll explore the nuances of each approach so you can choose the best option for your setup.
Preparatory stage and network requirements
The foundation of a successful connection is a properly organized local network. The computer and TV must be connected to the same access point. If you're using a dual-band router, make sure both devices are on the same frequency, preferably 5 GHz, as it provides higher throughput.
Check your network profile settings in your operating system. This is especially important for Windows: the network should be marked as "Private" and not "Public." For security reasons, the system blocks other devices from being discovered in the public profile, making it impossible to find your TV.
- 📶 Make sure both devices are connected to the same router, not to a guest network or a repeater with client isolation.
- 💻 Update the wireless adapter drivers on your computer to the latest version from the manufacturer's website.
- 📺 Check for system updates on your TV using the menu
Settings → Support → Software Update. - 🔒 Disable temporary use of VPN services or proxies that may hide your local IP address.
Sometimes antivirus software or a built-in firewall can block ports required for protocol broadcasts. If the connection fails, try temporarily disabling the third-party firewall for diagnostic purposes. It's also worth rebooting the router if it's been running continuously for a long time to clear the DHCP cache.
⚠️ Note: If your router uses "Client Isolation" (or AP Isolation) mode, devices on the Wi-Fi network will not be able to see each other. This mode is often enabled by default on guest networks at hotels or cafes, but can be enabled at home as well.
Mirror your screen using Miracast in Windows 10 and 11
Technology Miracast is the de facto standard for wirelessly streaming images from Windows and Android screens. It allows you to mirror your desktop or extend it to a TV without having to connect both devices to the same Wi-Fi network, as the connection is often established directly (Wi-Fi Direct).
To start the process, use hot keys on your computer keyboard. Win + KThe "Connection" panel will appear on the right, where the system will begin searching for available displays. If your TV supports Screen Mirroring, it should appear in the list.
You may need to launch the appropriate app on your TV. Depending on the brand, it may have different names:
- 📺 Samsung: Smart View or Source app.
- 📺 LG: Screen Share app.
- 📺 Sony: Built-in Cast or Mirror Link support.
- 📺 Philips: Wireless & Displays function in the network menu.
After selecting your TV from the list on your computer, you may see a connection confirmation prompt on the TV screen. Use your remote to press "Allow" or "Accept." Picture quality can be adjusted in the menu. System → Display → Graphic Features, where you can prioritize performance or image quality.
☑️ Checking Miracast Readiness
Using DLNA to play media files
If your goal is not to duplicate your desktop, but to view movies, photos or listen to music stored on your hard drive, then the technology DLNA (Digital Living Network Alliance) is a perfect fit. It creates a media server that streams content to your TV, allowing you to control playback with a remote.
In Windows 10 and 11, this feature is built-in and is called "Media Streaming." To activate it, open Control Panel, find the "Multimedia" section, and select "Media Streaming Settings." Here, you need to enable the feature and add your TV to the list of allowed devices.
After setting up the TV in the signal sources menu (button Input or Source) a new item will appear, such as "PC" or your computer's name. Once you click it, you'll see a structure of folders marked for sharing. These are typically the standard "Videos," "Music," and "Pictures" folders.
⚠️ Please note: The DLNA protocol does not support full-screen streaming, only specific files. It may also not play DRM-protected files (for example, movies purchased from some online cinemas).
How to add a folder to DLNA?
To stream video from a custom folder, open "Media Streaming Settings," click "Choose Folders," and add the desired folder. Make sure the folder's properties on your PC allow read access.
Connecting macOS and Apple devices (AirPlay 2)
Apple owners are lucky to have an ecosystem dominated by the protocol AirPlay 2Many modern TVs from Samsung, LG, Sony, and Vizio already have built-in AirPlay support, allowing you to mirror your Mac or iPad screen without purchasing an Apple TV box.
To connect, make sure AirPlay is enabled on your TV (usually found in the "General" or "Network" menu). On a Mac, click the Control Center icon in the menu bar and select "Screen Mirroring." Select your TV from the list.
When connecting for the first time, a four-digit code may appear on the TV screen. Enter it on your computer. After that, the image from your MacBook or iMac will appear on the big screen. To play video from Safari or QuickTime, you can use the AirPlay button directly in the app interface, which often offers better quality than full screen mirroring.
| Characteristic | Miracast (Windows) | AirPlay 2 (Apple) | DLNA |
|---|---|---|---|
| Transmission type | Screen mirroring | Dubbing / Media | Media files only |
| Delay | Low / Medium | Minimum | Absent |
| Sound | It is transmitted | It is transmitted | It is transmitted |
| Internet | Not required (Wi-Fi Direct) | Desirable | Not required |
Third-party programs and utilities
Built-in operating system tools don't always work perfectly, especially if the TV is older or has specific firmware. In such cases, third-party apps installed on the computer and, in some cases, on the TV itself come to the rescue.
One of the popular programs is LetsView or ApowerMirrorThey not only allow you to mirror your screen, but also control your computer with a remote control, take screenshots, and record screen video. Installation requires the app on both devices or a QR code for quick synchronization.
For users who need to control their PC remotely via TV (for example, to work with office documents), solutions like TeamViewer or AnyDesk, if your TV has Android TV and supports APK installation. However, these programs are not suitable for watching videos due to the low frame rate.
Connection problems and their solutions
Even with proper setup, issues may still occur. The most common issue is that the TV doesn't appear in the list of available devices. This is often due to Windows Discovery Services (SSDP Discovery) being stopped. Check their status in Services (services.msc) and set the startup type to "Automatic".
Another common complaint is audio and video desynchronization or a choppy picture. This is a clear sign of insufficient bandwidth. If the router is located far away or behind thick walls, the 5 GHz signal may be unstable. Try switching to 2.4 GHz for stability (although the speed will be lower) or move the computer closer to the router.
It's also worth paying attention to the difference in screen resolutions. If the computer is giving a signal 4K (3840x2160)If your TV or network can't handle the stream, the system may automatically downgrade to Full HD. This can be checked in the screen resolution settings.
⚠️ Note: TV menu interfaces and function names may vary depending on the manufacturer and model year. If you don't find the option described, check the official manual for your specific model in the "Network" or "Connections" section.
Frequently Asked Questions (FAQ)
Is it possible to connect a computer to a TV if the TV does not have Smart TV?
Yes, but only through additional devices. You'll need a TV set-top box (e.g., Android TV), a game console, or a special HDMI adapter (dongle) with Miracast or Chromecast support, which plugs into the TV's HDMI port and handles Wi-Fi signal reception.
Why is there no sound when connected via Wi-Fi?
Most likely, your system doesn't have a default audio output device selected. Click the speaker icon in the Windows system tray, select the playback device, and select your TV or wireless audio device. Sometimes, restarting the video playback application is required.
Does connecting a TV affect internet speed?
Yes, locally transferring large amounts of data (especially in 4K) can temporarily reduce the available speed for other devices on the network, as the Wi-Fi channel is shared among all clients. However, your internet connection isn't consumed when you're streaming local files.
What Wi-Fi standard is needed for 4K video?
For comfortable viewing of 4K content without buffering, it is highly recommended to use the standard Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax) in the 5 GHz band. The older 802.11n (Wi-Fi 4) standard may not provide sufficient throughput.