您可能无法从计算机或移动设备将内容投射到Chromecast的原因有很多。(Chromecast)
一些最常见的原因包括：
- 您的Chromecast未连接到与您正在投射的设备相同的WiFi网络。(WiFi)
- Chromecast上的电源线无法正常工作。
- Chromecast未正确插入电视HDMI端口。
- (Firmware)Chromecast上的固件已过期。
- 您的家庭Wi-Fi或互联网连接无法正常工作。
任何这些问题都会影响您投射到Chromecast的能力。这意味着当您使用YouTube或Netflix等服务时，Chromecast图标不会显示或在您单击时不起作用。
在本文中，您将了解如何解决所有这些问题，从最常见到最不可能。
1. 重启你的 Chromecast
与大多数故障排除一样，重启设备应该始终是您尝试的第一件事。如果您整天打开 Chromecast，有时它可能会失去网络或互联网连接。这种丢失的连接不会总是自动恢复。
当您重新启动路由器时，它将经历一个重新建立所有这些网络和互联网连接的启动过程。
为此，请启动您的Google Home应用。找到Chromecast设备并点按它。
在Chromecast设备屏幕上，点击右上角的齿轮设置(Settings)图标。在“设置”(Settings)窗口中，点击右上角的三个垂直点。
这将打开一个小菜单。从列表顶部选择重新启动。(Reboot)让您的Chromecast设备一两分钟完全重启并重新连接到您的网络和互联网。
准备就绪后，启动Netflix或YouTube等流媒体服务，并尝试将内容投射到您的Chromecast上。
2.重新启动您的计算机(Computer)或移动设备(Mobile Device)
如果重新启动Chromecast不起作用，则问题可能出在您正在投射的设备上。
如果您尝试从基于浏览器的流媒体服务进行投射，您总是可以先尝试重新启动浏览器。或者，如果您在Android或 iOS 设备上使用(Android)Hulu或Netflix等应用程序，则终止该应用程序并重新启动它也可能解决问题。
如果这些都不起作用，那么下一步就是完全重启。在Windows上，只需选择“开始(Start)”菜单，选择“电源(Power)”，然后选择“重新启动(Restart)” 。
同样，完成重新启动 Mac(restart your Mac)或重新启动 iOS(restart your iOS)或Android 设备(Android Device)的过程。
重新启动您的浏览器或应用程序，然后再次尝试投射到您的Chromecast。
3. 验证您的 Wi-Fi 网络
如果Chromecast图标未显示或无法正常工作，您应始终检查两件事。一是确认您的Chromecast和您正在投射的设备都连接到同一个Wi-Fi网络。
首先要检查的是您的计算机或移动设备连接到哪个Wi-Fi网络。(Wi-Fi)例如，在Windows 10上，您只需选择任务栏右上角的网络图标即可。
您将在所连接的网络名称下看到已连接状态。(Connected)记下网络名称。(Make)在您的Mac、Android或 iOS 设备上，只需以与检查您连接的网络名称相同的方式检查网络设置。
完成后，在您的移动设备上启动Google Home应用。向下滚动(Scroll)到您要检查的Chromecast设备并点按它。(Chromecast)
在Chromecast屏幕上，点击右上角的齿轮图标以查看其设置。向下查看列表，直到看到Wi-Fi。您的Chromecast连接到的(Chromecast)Wi-Fi网络的名称将显示在那里。
如果它与您的计算机或移动设备所连接的Wi-Fi(Wi-Fi)网络不匹配，您需要点击忘记(Forget)，然后使用 Google Home 将您的 Chromecast 重新连接到正确的 Wi-Fi 网络(reconnect your Chromecast to the correct Wi-Fi network)。
4. 解决您的Internet连接问题
即使两台设备都在同一个Wi-Fi网络上，也无法在没有互联网连接的情况下投射到Chromecast设备。(Chromecast)您如何检查您的Chromecast是否有互联网连接？
基本上，有两个步骤。首先(First)，确认Chromecast设备已连接到Wi-Fi网络。如果您已完成上述部分，那么您已经确认了这一点。接下来，您需要确保您的Wi-Fi网络已连接到互联网。
使用我们的互联网连接故障排除指南(internet connection troubleshooting guide)确保您的网络实际连接到互联网。
通常可以解决您的 Internet 连接问题的最快尝试之一是重置您的路由器(reset your router)。
5. 确保Chromecast(Chromecast Is)使用 2.4 GHz 频段(GHz Band)
较新的 Chromecast(Newer Chromecast)设备与您的家庭Wi-Fi路由器提供的 2.4 GHz和 5 GHz Wi-Fi频段兼容。(Wi-Fi)
但是，要使用 5 GHz，您需要双频路由器和更新的Chromecast设备。5 GHz频段也是一个较弱的信号，因此更容易受到微波炉等设备的干扰。
要确定您的Chromecast问题是否是由较弱的 5 GHz信号引起的，请尝试调整您的Chromecast设置以改用 2.4 GHz频段。
注意(Note)：如果您使用的是较旧的 Chromecast，则它无法使用 5 GHz，并且默认为 2.4 GHz，因此您不必尝试此步骤。
有两种方法可以将Chromecast更改为使用 2.4 GHz。两者都不简单。
- 按住侧面的小圆形重置按钮约 25 到 30 秒，重置您的Chromecast 。通过将Chromecast添加为Google Home应用中的新设备来重新设置(Set)Chromecast 。在设置向导中询问时，选择 2.4 GHz频段而不是 5 GHz。
- (Log)以管理员身份登录您的路由器。在路由器设置中(in your router settings)找到MAC 地址过滤(MAC Address Filtering)部分。选择 5GHz 频段并阻止您的 Chromecast 与其连接。注意(Note)：并非所有路由器都可以选择这样做。
6. 恢复出厂设置您的 Chromecast。
如果您已经尝试了所有其他方法，但您的Chromecast仍然没有显示或无法正常工作，那么可能是时候对您的Chromecast进行完全恢复出厂设置了。
恢复出厂设置将清除所有设置(factory reset will clear all settings)和配置，并将Chromecast设置回您首次购买时的状态。这应该有望清除可能导致Chromecast失败的任何错误或任何其他问题。
进行完全重置与重新启动的过程相同。只需(Just)在您的移动设备上启动Google Home应用，选择Chromecast设备，然后选择右上角的齿轮图标。
在设置屏幕上，选择右上角的三个垂直点。这次，不要选择Reboot，而是选择Factory reset。
您的Chromecast将再次重新启动，但这次重新启动后，它将不再连接到您的 Wi-Fi 网络或互联网。
您需要完成与最初设置新 Chromecast(initially set up the new Chromecast)时相同的初始设置过程。
FIX: Chromecast Not Showing Up or Not Working
There are a lot of reasons you may not be able to cast sоmething to your Chromecaѕt, either from your computer or уour mobile device.
A few of the most common reasons for this include:
- Your Chromecast is not connected to the same WiFi network as the device you’re casting from.
- The power cable on your Chromecast isn’t working.
- The Chromecast isn’t plugged into the TV HDMI port properly.
- Firmware on your Chromecast is out of date.
- Your home Wi-Fi or internet connection isn’t working.
Any of these issues will interfere with your ability to cast to your Chromecast. This means when you are using a service like YouTube or Netflix, the Chromecast icon won’t show up or won’t work when you click on it.
In this article, you’ll learn how to fix all of these issues, from the most common to the least likely.
1. Restart Your Chromecast
As with most troubleshooting, restarting devices should always be the first thing you try. If you leave your Chromecast turned on all day, there are times when it can lose its network or internet connection. This lost connection won’t always recover automatically.
When you reboot your router, it will go through a startup process that re-establishes all those network and internet connections.
To do this, launch your Google Home app. Find the Chromecast device and tap it.
On the Chromecast device screen, tap the gear Settings icon at the upper right. On the Settings window, tap the three vertical dots at the upper right.
This will open a small menu. Select Reboot from the top of the list. Give your Chromecast device a minute or two to fully reboot and reconnect to your network and the internet.
When it’s ready, launch a streaming service like Netflix or YouTube and attempt to cast content to your Chromecast.
2. Restart Your Computer or Mobile Device
If restarting your Chromecast didn’t work, the issue could be with the device you’re casting from.
If you’re trying to cast from a browser-based streaming service, you could always try restarting your browser first. Or if you’re using an app like Hulu or Netflix on your Android or iOS device, killing the app and relaunching it might also fix the problem.
If neither of these work, then a full restart is the next step. On Windows, just select the Start menu, select Power, and then select Restart.
Likewise, go through the process to restart your Mac, or restart your iOS or Android Device.
Relaunch your browser or app and try casting to your Chromecast again.
3. Verify Your Wi-Fi Network
There are two things you should always check if the Chromecast icon isn’t showing up or otherwise not working. One is to confirm that your Chromecast and the device you’re casting from are both connected to the same Wi-Fi network.
The first thing to check is which Wi-Fi network your computer or mobile device is connected to. On Windows 10, for example, you can just select the network icon at the right corner of the taskbar.
You’ll see the Connected status under the name of the network you’re connected to. Make note of the network name. On your Mac, Android, or iOS device, just check the network settings in the same way to check the network name you’re connected to.
Once you have that, launch the Google Home app on your mobile device. Scroll down to the Chromecast device that you want to check and tap it.
On the Chromecast screen, tap the gear icon at the upper right to view its settings. Look down the list until you see Wi-Fi. The name of the Wi-Fi network your Chromecast is connected to will be displayed there.
If it doesn’t match the Wi-Fi network your computer or mobile device is connected to, you’ll need to tap Forget and then use Google Home to reconnect your Chromecast to the correct Wi-Fi network.
4. Troubleshoot Your Internet Connection
Even if both devices are on the same Wi-Fi network, casting to a Chromecast device without an internet connection won’t work. How do you check if your Chromecast has an internet connection?
Basically, there are two steps. First, confirm the Chromecast device is connected to the Wi-Fi network. If you’ve completed the section above, then you’ve already confirmed this. Next, you need to make sure your Wi-Fi network is connected to the internet.
Use our internet connection troubleshooting guide to make sure your network is actually connected to the internet.
One of the quickest things to try that usually works to fix your internet connection is to reset your router.
5. Make Sure Chromecast Is Using 2.4 GHz Band
Newer Chromecast devices are compatible with both the 2.4 GHz and 5 GHz Wi-Fi bands put out by your home Wi-Fi router.
However, to use 5 GHz, you need a dual-band router and a newer Chromecast device. The 5 GHz band is also a weaker signal so more susceptible to interference from appliances like microwave ovens.
To determine if your Chromecast issues are caused by a weaker 5 GHz signal, try adjusting your Chromecast settings to use the 2.4 GHz band instead.
Note: If you’re using an older Chromecast, it isn’t capable of using 5 GHz and will default to 2.4 GHz anyway, so you won’t have to try this step.
There are two ways you can change Chromecast to use 2.4 GHz. Neither are simple.
- Reset your Chromecast by pressing and holding the small round reset button on the side for about 25 to 30 seconds. Set up Chromecast again by adding it as a new device in the Google Home app. When asked during the setup wizard, select the 2.4 GHz band instead of 5 GHz.
- Log into your router as an administrator. Find the MAC Address Filtering section in your router settings. Choose the 5GHz band and block your Chromecast from connecting to it. Note: Not all routers have the option to do this.
6. Factory Reset Your Chromecast.
If you’ve tried everything else and your Chromecast still isn’t showing up or otherwise not working, it may be time to do a full factory reset on your Chromecast.
A factory reset will clear all settings and configurations and set the Chromecast back to the state it was in when you first bought it. This should hopefully clear any errors or any other issues that may be causing the Chromecast to fail.
Doing a full reset is the same process as doing a reboot. Just launch the Google Home app on your mobile device, select the Chromecast device, and choose the gear icon at the upper right.
On the settings screen, select the three vertical dots at the upper right. This time, instead of choosing Reboot, select Factory reset.
Your Chromecast will restart again, but this time when it comes back up it will no longer connect to your Wi-Fi network or the internet.
You’ll need to walk through the same initial setup process you went through when you initially set up the new Chromecast when it was new.
