Today's fast-paced work environment often demands flexible workspace management, and the question of how to display content from a PC to a laptop via Wi-Fi is becoming increasingly important for users looking to expand their desktop without unnecessary cables. Imagine this: you're working on a desktop computer with powerful graphics, but you urgently need to show the results to a colleague sitting next to the laptop, or you simply want to use the screen of a portable device as a second monitor for displaying toolbars. In such cases, running HDMI or VGA cables is not only inconvenient but often impossible due to the design of the device.
Fortunately, wireless data transmission technologies have reached a level where image delay is minimal and image quality remains high. Wireless projection Remote access is no longer the preserve of expensive conference rooms and is now available to every owner of a Windows 10 or 11 device. In this article, we'll take a detailed look at the built-in system tools, third-party remote access software, and specialized utilities that will transform your laptop into a fully-fledged PC monitor, using only the potential of your local network.
Before you begin setting up, it's worth noting that connection stability directly depends on the quality of your router and the distance between devices. Video stream transmission protocols They require sufficient bandwidth, so using Wi-Fi 5 (ac) or Wi-Fi 6 (ax) is preferable to older versions. Let's consider which tools are best suited for your specific needs.
Using the built-in Projection feature in Windows
The easiest and most effective way, which does not require installing additional software, is to use a native Windows function called Projection onto this computerThis method is based on technology Miracast, which allows video signal transmission via Wi-Fi Direct or a local network. To implement this method, both devices must be running Windows 10 or Windows 11, as older versions of the operating system may lack the necessary components or may not function correctly.
First, you need to set up the laptop that will act as the receiving screen. Go to the menu Parameters, select a section System and find the item Projecting to this computerIf the features aren't installed, the system will prompt you to add the "Wireless Display Component" through the update center. After installation, you'll be able to select an availability mode: for example, "Available anywhere on secure networks."
⚠️ Important: Make sure that Windows Firewall or third-party antivirus software is not blocking incoming connections for the wireless projection feature, otherwise the receiving computer will not see the signal source.
Now let's move on to the main computer (the image source). Press the key combination Win + K to open the connection panel. Your laptop should appear in the list of available devices. After selecting the device, a connection request will appear on the laptop screen; confirm this. Image quality can be adjusted in the projection settings, prioritizing response speed or visual quality.
Setting up remote access via TeamViewer and AnyDesk
If built-in Windows tools don't work for some reason, or you need access to your PC not only within the same room but also over the internet, remote control programs can help. TeamViewer And AnyDesk are leaders in this niche, providing not only control but also full screen sharing. Unlike Miracast, these programs transmit the video stream through their servers or directly over a P2P connection, allowing them to bypass complex router settings.
To get started, you need to install the client program on both devices. On the source PC, you need to set a permanent password for unattended access or simply provide a temporary access code. On the laptop, by entering the partner's ID, you will receive a full image of the desktop. For comfortable work in "broadcast" mode (without control), you can disable the transmission of keyboard and mouse input on the remote device in the TeamViewer settings.
A key advantage of such solutions is the ability to work across different networks. You don't need to have your laptops in the same Wi-Fi band; internet access is sufficient. However, it's important to keep in mind that frame delay (latency) The bandwidth in such programs can be higher than when using local protocols, making them less suitable for dynamic tasks such as video editing or gaming, but ideal for showing presentations or working with documents.
Why might the frame rate be low?
Low frame rates during remote access are often caused by CPU overload from video encoding or a slow internet connection. Try disabling the desktop wallpaper and Windows visual effects on the remote PC to improve FPS.
Creating a Second Monitor with Spacedesk
When the goal is not just a copy of the screen, but an expansion of the workspace, specialized utilities like SpacedeskThis software turns any laptop, tablet, or phone into an additional monitor for your main PC via a local Wi-Fi network. Unlike simple projection, Spacedesk creates a virtual video card driver, making Windows think a physical second display is connected to the system.
The setup process is extremely simple: install the server driver (Spacedesk DRIVER Console) on the host computer, and the client application (Spacedesk VIEWER) on the laptop. After launching both applications on the same Wi-Fi network, the laptop will automatically detect the server. The driver settings allow you to select the resolution, color depth, and number of connected clients, making the solution flexible for various use cases.
Pay special attention to performance settings. You can disable sound or reduce color quality in the driver menu if you notice your Wi-Fi network is struggling to handle the data flow. This is a great way to boost productivity, for example, by displaying messengers or reference materials on the laptop screen, leaving the main monitor clear for work.
☑️ Pre-launch check for Spacedesk
Streaming media via DLNA and Plex
If your sole purpose is to view videos or photos stored on your PC on your laptop screen, then using full desktop streaming may be overkill. In this case, the optimal solution is DLNA or media servers like Plex And EmbyThese tools allow you to stream content directly using the resources of the receiving device's video decoder, reducing the load on the network and the host computer.
To implement this method, you need to enable media streaming on your PC. In Windows, this is done through "Media Streaming Settings" in the Control Panel. On a laptop, simply open any DLNA-enabled media player (such as VLC or the built-in "Movies & TV") and select your computer from the list of devices. The image will be streamed in the file's native resolution, without the lag typical of a remote desktop.
This approach is especially useful if you want to use your laptop as a digital photo frame or stream video to a large screen in another room where the laptop is connected to a TV. This approach will maximize image quality because the video stream is not compressed in real time, as is the case with Miracast or TeamViewer.
Comparison of image transmission methods
Choosing the right method depends on your specific needs: whether you need interactivity, minimal latency, or just a static image. Below is a table comparing the key characteristics of the methods discussed, to help you quickly navigate and choose the optimal solution for your situation.
| Method | Latency | Image quality | Need for software | Working via the Internet |
|---|---|---|---|---|
| Windows projection (Miracast) | Low | High | No (built-in) | No (local only) |
| TeamViewer / AnyDesk | Average | Average (compressed) | Yes (client) | Yes |
| Spacedesk | Low/Medium | High | Yes (driver + client) | No (locally) |
| DLNA / Plex | Minimum | Original | Yes (player) | No (locally) |
As the comparison shows, Spacedesk or built-in projection are best for working with text and code, as they ensure crisp fonts. DLNA is ideal for showing video files without interactivity. If you need to help a colleague or access a home PC from the office, TeamViewer is a must.
Optimizing your Wi-Fi network for stable transmission
The quality of wireless image transmission directly depends on the state of your local network. Interference Interference from neighboring networks, operation in a congested 2.4 GHz band, or a physical obstacle between the router and devices can cause artifacts, image blur, and audio desynchronization. To ensure smooth operation, it is recommended to use the 5 GHz, which has greater throughput.
It's also worth checking whether your airtime is being used by other active downloads. If someone on the network is actively downloading files or watching 4K video on another device, the available bandwidth for streaming may be insufficient. You can try prioritizing traffic for devices participating in the streaming (QoS) in your router settings.
⚠️ Note: Router and operating system interfaces are constantly being updated. The location of QoS settings or Wi-Fi channels may differ from those described, so please consult the official documentation for your router model.
If you're using older Wi-Fi standards (such as 802.11n), transmitting a Full HD image may be difficult. In this case, consider using a USB adapter that supports AC or AX standards for one of the devices to ensure a stable connection. Keep in mind that distance also plays a role: the closer the devices are to the router and to each other, the better the signal.
Is internet required for Miracast to work?
No, the internet is not required for Miracast (Windows Projection) to work. Devices connect directly via Wi-Fi Direct or through a local router, which acts only as a switch. However, if you use streaming services on the PC being projected, an internet connection is required.
Why can't the laptop see the computer when projected?
Most often, the problem lies in the network settings. Make sure both devices are on the same network (same SSID) and that the network type in Windows is set to "Private" and not "Public." Also, check Windows services: the "Wireless Display" service should be running.
Is it possible to transmit sound via Wi-Fi projection?
Yes, modern versions of Windows and the Miracast protocol support transmitting audio along with video. Once connected, you may need to manually select the playback source in the audio settings on the receiving device (laptop) if the audio doesn't play automatically.
How to reduce mouse cursor lag?
Cursor lag often occurs when using remote access programs over the internet. To reduce lag, use a wired connection for one of the devices, switch to the 5 GHz band, or use local methods like Spacedesk, which are faster than cloud-based alternatives.