Miracast is a technology that "transmits" content using a wireless network. Newer Windows OS users can use this feature without advanced settings. Use Miracast to cast videos, photos, and music from your computer to third-party devices that support this technology.
Miracast transmits the "picture" from the computer screen to third-party devices using a wireless network, that is, without additional cables.
Smart TVs, mobile devices, projectors and other devices can receive broadcast content. No cables needed to broadcast via Miracast digital signal HDMI, VGA and others.
All data is "transmitted" via Wi-Fi wireless technology. For a full-fledged "broadcast" of multimedia mobile device and the TV (other screen) must be connected to the network. Both devices ("transmitter" and "receiver") are synchronized in one access point.
Using Miracast on Windows 10
This technology, as described above, is integrated into the new Windows OS. You do not need to download and install third party programs. To start "broadcasting" simply open the "Start" menu and click on the "Settings" icon, which is in the lower left corner. Then go to the "Devices" section.This section displays all peripherals that are connected to the computer. You need to create a connection to a new device to which information will be transferred. By clicking on the "+" button, which is located next to the " Adding Bluetooth or other device", select the "Wireless Display or Docking Stations" section.
Then wait until OS Windows using automatic search, will detect available devices that are connected to the router. The broadcast of "content" will start immediately if there is a device with this technology in the "network". To transfer information, click "start broadcasting".
Flaws
"Miracast" starts very quickly and transmits information without problems. But this technology works with disadvantages. According to gamers, when broadcasting, there is a “delay” in the picture.Because of this, you will not be able to fully play. Watching movies, photos and listening to music is no problem. The “picture” delay appears for two reasons: low throughput"receiver", possibly a "transmitter", or an unstable wireless network.
Key Features
- the technology is integrated into the new OS Windows;
- allows you to "transfer" the picture to devices with Miracast support;
- connects devices via Wi-Fi;
- works without installing third-party software;
- during the broadcast, you will encounter a high response of the transmitted “picture”.
In Windows 10, you can find one very interesting feature called Miracast which can transmit image and sound via wireless technologies, in other words, via Wi-Fi. So if you want to watch a movie on big TV and monitor, connect Miracast.
This guide is just aimed at helping users master the wonderful technology. wireless transmission data. I will show everything with an example. Let's take a look at some connectivity issues.
How to connect a TV or monitor via Miracast?
To get started, make sure that your TV or monitor supports a wireless network (Wi-Fi), and now let's get down to business.
On your computer under Windows control 10 press keyboard shortcut Win+P and immediately opens the "Project" section on the right. At the very bottom we find the item "Connecting to a Wireless Display" and click on it.
The search will start immediately wireless devices, to which we will transfer the picture, in other words, a TV, monitor or something else.
If something was found, click on this device, by the way, if the screen on the TV / monitor is turned off, be sure to turn it on.
What do we get? And we get an image from a computer monitor, which is projected onto a TV screen, and the picture will be transmitted in good quality and without interference.
What to do if Miracast is not working?
As you can see, we performed a minimum of actions and the connection took us less than five minutes. But, as always, there may be some problems, and here, by the way, what are they.
No Miracast support
In other words, your Wi-Fi adapter simply does not support Miracast, or the necessary drivers are not installed for the adapter. This is true if you do not have the "Connect to a wireless display" item.
If the item is still there, then when you click on it, you can see a message telling us that the device does not support Miracast. Therefore, for many, this article may be useless. Of course, you can purchase another Wi-Fi adapter that supports this technology.
If there are no drivers for Windows 10 for your devices, don't despair. Download what data, for example, may be present for Windows 8, they may also be suitable.
Useful:
Connecting to a TV or monitor via Miracast takes a very long time
Also a very common reason that is familiar to us when connecting any other device to WiFi networks- the connection is endless.
A little higher, I described that you need to install the latest drivers for the Wi-Fi adapter and hope that the system has already installed them automatically. This method can also work here, but not always.
There are few versions here, perhaps a problem with the TV itself, because some devices can connect immediately, and some cannot, or the technology is not supported external device. You can try restarting both the TV and the computer, it can help, and you should also take into account that old equipment can greatly ruin your life, that is, it will be possible to transfer the image to the TV or monitor, but there will be terrible brakes on both devices.
Miracast is already a built-in technology in the operating room. Windows system 10, which allows you to broadcast images from the PC / laptop screen to a TV or wireless projector.
In this article you will learn:
- How Miracast technology works and what it is for.
- How to connect a TV or wireless monitor.
- Connection errors and how to fix them.
How it works and who needs it
This feature has been used since 2012 based on technology W.I.— FI direct. As such, the supported devices do not have markings. However, in all Windows versions 10 it is already built in, besides most latest TVs and projectors are easily connected to another device.
It has become widespread in all spheres of human life. In the universities of the country, many classrooms are equipped with a wireless projector, as well as many offices. In addition, at home you can do without flash drives and broadcast from the monitor screen and even a smartphone directly to TV.
How to connect to a TV/wireless monitor
The creators have worked out the possibility of broadcasting to another screen so much that it has become intuitive. Users who have connected at least once immediately remember the entire algorithm of actions, which consists of several steps:
Missing "connect to wireless display"
This problem is most often found on not the newest PCs / laptops released before 2012-2013. The solution in this case is component upgrade Or buying a new laptop. Another reason for the lack of connection lies in supportMiracast by the wi-fi adapter itself or in its outdated drivers.
To update them, you need to install from the media (CD-ROM), which is usually included in the package. For laptops, you can find drivers on the official website of the manufacturer in the section " Software and Support» and download them.
What to do if the device is not supported
First you need to find out which device is not able to connect.
To do this, enter the menu Start– Options – System – Project to this computer, and here you can see if the monitor supports the Miracast standard. 
In this case, it becomes clear that the matter is in the PC itself, from which the image will be projected. However, do not despair, perhaps the problem is in the same adapter or in the TV. To confirm this information should be carefully studied specifications or write to support.
Miracast technology allows you to transfer data from a smartphone, tablet, laptop to a TV screen using wireless network. The feature became especially popular with the release of Windows 8.1 and Windows 10, because in these versions of the system it is supported by default.
Enable on Windows 10
To enable Miracast on Windows 10, you need to press the combination on the keyboard Win keys+P and select the option "Connect to a wireless display" in the menu.
By doing this, you will start searching for wireless displays. In order for the monitor or TV to be determined, it must also first enable the Miracast function on it. If there is no such option in the TV settings, just turn on the Wi-Fi adapter.
You can also add a device through the "Settings" of Windows 10:
If the connection is established, then you will see the same picture on the TV screen as on the laptop display. To end the connection, turn off Miracast or Wi-Fi on the TV, or remove the device from Windows settings 10.
Troubleshooting
Miracast technology has become mass-produced not so long ago, so its work is not fully debugged. As a result, despite the ease of establishing a connection, many users are faced with the fact that the connection constantly breaks or does not appear at all. The problem may arise already at the stage of choosing a connection to a wireless display - such an item simply will not be in the menu called by the Win + P combination. Possible reasons malfunctions:
- The Wi-Fi adapter on your laptop or PC does not support Miracast.
- There are no required drivers for the wireless module.
If the laptop was released before 2012, then most likely its Wi-Fi module simply does not support Miracast. If the laptop (or Wi-Fi adapter separately) is new, then try downloading from the official website and installing WLAN (Wi-Fi) drivers.
If you cannot find drivers for your model on Windows 10, install software for earlier versions - Windows 8.1, Windows 8.
Another possible problem is the inability to establish a connection with the TV. First of all, you need to make sure that the television equipment generally supports Miracast technology. The next step is to update the Wi-Fi adapter drivers. 
Unfortunately, sometimes these measures do not work. It is also difficult to offer a specific solution, because often we are talking about a banal conflict of devices due to the imperfection of the technology. But in extreme cases, TV and laptop can always be connected using an HDMI cable.
There are no related articles.
Finally, I figured out the wireless display function in Windows 10. I connected and checked everything for half a day in order to prepare an article with verified information for you. And of course with photos and screenshots.
There are two main technologies: and Intel WiDi (Intel stopped developing this technology), with which you can output image and sound from a computer, laptop or mobile devices via Wi-Fi. In other words, use the TV (projector, monitor) like a wireless display. The trick is that with the help of these technologies, you can not only display a movie or photo “over the air” (as is the case with), but broadcast everything that happens on the main computer monitor or laptop screen.
A wireless display, most often a TV, works as if it were connected via HDMI cable. You can duplicate the image, expand the screen, and more, all wirelessly. There are also monitors with Miracast support.
The Wireless Display feature in Windows 10 displays images using Miracast technology. But, for some reason, when connected, the TV had the inscription "Intel's WiDi". As it turned out (read on Intel website), they stopped development and support Intel technologies®WiDi. And they report that Windows 8.1 and Windows 10 already natively have support for Miracast, which can be used to connect wireless displays without additional software.
For everything to work, there must be Miracast support at the level of hardware and drivers. The Wi-Fi adapter that is built into your laptop or connected to your PC must support the wireless display function. The video adapter should also have such support.
I tested on the following hardware:
- PC with Intel processor Core i3-6098P and graphics card GeForce GTX 750 Ti. Wi-Fi adapter TP-Link TL-WN725N V2.
- Laptop with old processor Intel Core i3 third generation and integrated video Intel HD Graphics 4000. NVIDIA graphics card GeForce GT 635M. Wi-Fi adapter is the same TP-Link TL-WN725N V2. Since the adapter built into the laptop does not work.
- I used an LG TV as a wireless display. The model is from 2012, but with support for Miracast and Intel WiDi. As it turns out, the new and fancy Philips TV doesn't have built-in Miracast support. If your TV also does not support this technology, then you can use.
This connection works without a router, directly. There is no need to connect your computer (laptop) and TV to the same router.
In this article, I will first show you how to enable Miracast on Windows 10 and how to connect to a wireless display. Then, consider solutions possible problems and mistakes.
Connecting to a wireless display (TV) in Windows 10 via Miracast
Press the keyboard shortcut Win+P(English) . A window with different options for displaying the image should appear on the right. And there should be an item "Connect to a wireless display". We click on it. If there is no such item, then most likely your hardware or driver does not support this function. At the end of the article I will write about this in more detail, and show how to perform the check.
It starts searching for wireless displays and audio devices.
Most likely, you need to enable the Miracast / Intel WiDi function on the TV. In older LG models, this is done in the menu, under "Network". Like this:
On new LG models, most likely these settings look different. On the Samsung TVs, in the source selection menu, select "Screen Mirroring" (may not be available on all models). On TV from Sony - "Screen mirroring" in signal sources (separate button on the remote control). On the Philips TVs: Under "Settings" - "Network settings" - "Wi-Fi Miracast". But on mine, which is with Android TV, there is no such item.
If your TV does not have built-in Miracast support, you can buy a separate Miracast (Mirascreen) adapter. It connects to the HDMI port of the TV. Receives image and sound and outputs it to the TV.
The TV should appear in the search results. Just select it and the connection process will begin.
There will be an inscription "Follow the instructions on the device screen." In my case, on the TV you need to confirm the connection of the computer.
All is ready!
If you can't connect the first time, don't give up. Try again. Reboot devices. Something didn't work for me the first time either.
You can change the projection mode. For example, expand the screens, or use only the second (TV connected via Miracast). Or duplicate the image on both screens.
You can also disconnect from the wireless display there.
Connecting by adding a new device in the settings
There is another way. In the settings, go to "Devices" and select "Add Bluetooth or other device". Then click on "Wireless Display or Dock".
Turn on Miracast on your TV and it should appear in the list. Select your TV and set up a connection.
Maybe this method will be more suitable for someone.
Sound control when connecting via Miracast
Like an HDMI cable, Miracast also transmits sound. I, immediately after connecting, the sound from the computer was output through the speakers of the TV. The default device was "Digital Output". And it's not always convenient. Therefore, in order for the sound of the player through the laptop speakers, or speakers, you just need to change the default playback device.
After that, the sound will be played through the computer's speakers. If necessary, you can make "Digital Output" the default device back.
Miracast does not work and there is no item "Connect to a wireless display"
In older versions of Windows 10, when the system "understood" that there was no Miracast support, the message "The PC or mobile device does not support Miracast, so wireless projection from it is not possible" was displayed.
In newer versions, there is simply no item "Connect to a wireless display" in the "Project" menu, which is opened by the keyboard shortcut Win + P.
Most likely, there is no Miracast support at the level WiFi adapter. Here I have, for example, through the built-in laptop wifi The module cannot connect to a wireless display. The laptop is not new though. Somewhere around 2012-13. And then WiFi connections adapter TP-Link TL-WN725N V2 everything works.
To given function worked, you need support on the side of the Wi-Fi adapter and graphics adapter (video card). Both at the level of iron and the driver. This is easy to check.
Run command line and run the command netsh wlan show driver.
The results will contain a line "Wireless display supported:" With the factory (old) Wi-Fi module on the laptop, I have this result:
As you can see, there is no support. The graphics driver does, but Wi-Fi doesn't.
And here is the result of the test with another Wi-Fi adapter:
And with this configuration, everything works fine.
What can be done:
- Update Wi-Fi adapter driver. Unlikely, but it might work. Here is the instruction: .
- If, according to the results of the check, the problem is only in Wi-Fi, then you can replace the Wi-Fi adapter itself. But I noticed that the specifications simply do not indicate whether there is support for a wireless display or not. On TP-Link TL-WN725N the second hardware version (V2) everything works. But I'm sure there are a large number of other adapters that support Miracast. Need to find.
- It might be easier for you.
Let's consider one more problem.
Failed to connect to wireless display
The computer finds the TV, select it, it takes a long time to connect and the error "Failed to connect" appears. Or the computer does not see the TV and it does not appear in the list of available devices.
I also got this error several times. It is difficult to say what it is connected with. Be sure to try connecting again.
- Restart your computer and unplug your TV for a couple of minutes.
- Perhaps this is due to bad signal. If possible, reduce the distance between the computer and the TV. Check if the Miracast function is active (or something like that) on TV.
- Update the Wi-Fi adapter driver. I provided a link to the manual above.
- If possible, try connecting to another TV that can also act as a wireless display.
Update: Eugene shared a solution in the comments, which, as it turned out, helped not only him. The problem was the following: the computer found the TV, as shown in the instructions above. But when trying to connect on the TV, the screen flickered and an error appeared: "A connection request from ... failed. You can try again from a mobile device."
It helped to disable the discrete graphics card in the device manager. I don’t know if this is the right decision, because we are essentially turning off the productive video adapter. But it looks like it works. You can try. We go into the device manager and turn off the discrete video card, leaving the integrated one to work.
Don't forget to turn it back on later. When you stop using your wireless display, or it turns out that this solution did not work for you.
Update: disable antivirus and firewall
There have already been several comments that Miracast in Windows 10 started working after disabling the antivirus or firewall.
Try temporarily disabling your antivirus. You can also try disabling the firewall. Windows Defender. If you know what rule in the firewall settings blocks the wireless display and how to add it to the exceptions, please write in the comments.
I spent a lot of time and effort on this article. I hope not in vain. If you have something to add, or want to ask a question, then I'm waiting for you in the comments. Good luck!