Modern TVs of the brand DEXP Equipped with Smart TV functionality, it allows you to display your computer's content on a large screen without cables. This is especially convenient for viewing movies, photos, or presentations in high definition. Wireless data transmission is based on standards. Miracast And DLNA, which are built into Windows 10 and 11 operating systems by default.
For successful device syncing, it's crucial that both devices are on the same local network. If your laptop is connected via Ethernet and your TV via Wi-Fi, or if they "see" different routers (for example, the main router and the repeater have different SSIDs), the connection may fail. Check the connection status on both devices before beginning setup.
In this article, we'll detail the steps for different usage scenarios. You'll learn how to mirror your entire screen, extend your desktop, or simply play a video file. We'll also cover common driver and network protocol issues that often interfere with the stable operation of your wireless interface.
Preparatory stage: checking the network and settings
The first step is to verify your network infrastructure. Make sure your router is transmitting a signal at the correct frequency. 2.4 GHz or 5 GHzFor transmitting video streams without delays and image artifacts, the 5 GHz band is preferable, as it provides higher throughput.
Go to your TV settings DEXP and find the network connections section. The path usually looks like this: Settings → Network → Wi-FiMake sure the connection status is active and the IP address is obtained automatically. On your computer, open the command prompt and enter the command ipconfigto compare the first three octets of the address with the TV address.
If the addresses are in different subnets (for example, 192.168.1.x and 192.168.0.x), the devices won't see each other. In this case, you'll need to reboot the router or manually assign static IP addresses to the same subnet in the TCP/IP settings.
⚠️ Attention: Some router models have a "Client Isolation" or "Guest Network" feature. If this option is enabled, devices on the Wi-Fi network cannot communicate with each other, even if they are connected to the same router. Disable guest mode to configure this feature.
It's also worth updating the drivers for your laptop's wireless adapter. Go to Device Manager → Network Adapters, find your Wi-Fi module and select the driver update. Outdated software may not correctly support media device discovery protocols.
⚠️ Attention: Antivirus software or the built-in Windows Firewall may be blocking incoming connections. If this setting fails, temporarily disable network protection or add an exception for the "Private Network" profile.
Screencasting via the "Projection" function (Miracast)
The fastest way to display an image is to use a built-in Windows feature. This technology, known as Miracast, allows you to duplicate your screen or extend it to an external display. TVs DEXP Smart TVs usually have a built-in receiver for this signal.
On your TV remote control, find the button labeled SOURCE, INPUT or the screen icon with an arrow. In the menu that opens, select the signal source: "Wireless Display," "Miracast," "Broadcast," or similar. A waiting-for-connection message will appear on the screen.
Now let's move on to the laptop settings. Press the key combination Win + KThe "Connection" panel will appear on the right. The system will begin searching for available devices. Your TV should appear in the list. DEXPClick on it to start pairing.
Once the connection is successful, you can select the operating mode. Click Win + Pto open the projection menu. The available options are: "Computer screen only," "Duplicate" (copy), "Extend" (second desktop), and "Second screen only." "Duplicate" mode is most convenient for watching movies.
Miracast Checklist
Picture quality depends on the strength of your Wi-Fi signal. If you notice audio and video out of sync or your cursor is jerking, try moving closer to the router. The Miracast protocol is sensitive to interference and requires a stable connection.
Using DLNA to play media files
If your goal is not to duplicate your desktop, but simply to view videos or photos stored on your hard drive, it is better to use the technology DLNAIt is less resource-intensive and provides smoother playback of large files.
In Windows, you need to enable media streaming. Open "Media Streaming Settings" through Control Panel or Search. Click "Turn on media streaming." Find your TV in the list of devices. DEXP and allow him access.
Now you can play the video file using a standard player (such as Windows Media Player or VLC). While playing, right-click the video and select "Cast to Device." Select your TV from the list.
An alternative method is to use the built-in Movies & TV app in Windows 10/11. Open the video file, click the connection icon (the three dots or the screen icon), and select the target device. The TV will automatically open the player and begin playback.
Why does video lag when using DLNA?
If the video is choppy, the file's bitrate may be too high for your current Wi-Fi speed. Try lowering the quality or using an HDMI cable for such files. Bandwidth congestion from other devices can also play a role.
The advantage of DLNA is that playback controls (pause, rewind) are often available directly from the TV remote. In this case, the computer merely acts as a data storage server.
Setup via Google Chrome browser
If standard Windows tools are unstable, you can use a browser Google ChromeIt has a built-in feature for casting tabs or the entire screen to Chromecast-enabled devices, which is emulated by many Smart TVs.
Open your browser and click the three dots in the upper right corner. Select "Save and Share" (or just the three dots in older versions) → "Cast..." A device search window will open.
In the menu that opens, you can choose what to stream: a browser tab, the entire desktop, or a specific file. Click on the name of your TV. DEXPThe image will appear on the big screen.
| Parameter | Miracast (Win+K) | DLNA | Chrome Cast |
|---|---|---|---|
| Purpose of use | Screen mirroring, presentations | View videos/photos | Tab broadcasting |
| Latency | Medium/High | Minimum | Depends on the tab |
| Control | From a computer | From the TV and PC remote control | From a computer |
| Network requirements | Tall | Average | Tall |
Using a browser is convenient because it doesn't require extensive system configuration. However, for gaming or text editing, this method can be inconvenient due to the mouse cursor being tied to the browser window.
Solution: TV is not visible or does not connect
One of the most common problems is that the laptop simply doesn't find the TV in the list of available devices. This is often due to the network profile. In Windows, the network profile should be set to "Private," not "Public."
To edit your profile, go to Settings → Network & Internet → Wi-Fi (or Ethernet) → Manage known networksClick on your network name and select "Private." This will make your computer visible to other devices on the local network.
Another reason is disabled services in Windows. Click Win + R, enter services.msc and find the following services: "DLNA Media Server," "SSDP Discovery Service," and "Generic Plug and Play Host." Make sure they are running and the startup type is set to "Automatic."
If all else fails, try resetting your network settings. In the command prompt (run as administrator), run the following commands:
netsh winsock resetnetsh int ip reset
ipconfig /flushdns
After running the commands, be sure to restart your computer and TV. This will clear the DNS cache and reset protocol stacks, eliminating software conflicts.
Alternative methods and third-party software
Built-in Windows tools aren't always perfect. If the standard methods don't work or you need advanced features, you can use third-party software. A popular utility is Let'sView or ApowerMirror.
These programs need to be installed on both your computer and your TV (if available in the app store) DEXP There's a corresponding app) or use the web version. They are often more stable and offer additional features, such as screen recording or remote control.
Also worth mentioning is the technology AirPlay, if you use a MacBook. TVs DEXP AirPlay 2-enabled devices allow you to connect via the "Screen Mirroring" menu in macOS without installing additional software.
When using third-party software, make sure you download it from the developers' official websites to avoid introducing malicious code into your home network.
Questions and Answers (FAQ)
Is it possible to connect a laptop to a DEXP TV without Wi-Fi?
Yes, you can use an HDMI cable. This will ensure the best image quality and eliminate lag. There are also Wi-Fi Direct adapters that create a direct connection between devices without a router, but they require support from both devices.
Why is there no sound on the TV when connected?
When connecting via Miracast, the audio should switch automatically. If this doesn't happen, click the speaker icon in the Windows tray, select the audio output device, and select your TV. DEXP on the list.
Does connecting a TV affect internet speed?
Yes, when streaming high-definition (4K) video, the Wi-Fi channel may become heavily loaded. This may result in reduced download speeds on other devices connected to the same network.
Do all DEXP models support wireless streaming?
Most modern Smart TV models support this feature. However, older models or non-Smart TV versions require an external set-top box (such as an Android Box or Chromecast) to access this functionality.