Each user is a world. And each user wants to customize their operating system to the maximum to be as comfortable as possible. Despite the great customization options of Windows 10, for now we have to resorting to third-party applications to be able to change the boot image in Windows 10. At least for now, but it may be that in future updates the guys from Redmond will allow modifying the boot image in Windows 10.
In order to change the startup image in Windows 10 we have to make use of the Login Lockscreen Image Changer application, a small application that does not need to be installed in order to change the startup image. Login Lockscreen modifies the system file responsible for displaying the default image, so like any application that modifies the registry or the ins and outs of windows, you have to be careful when using it.
Login Lockscreen Image Changer it is very easy to use. We just have to download the application and run it. Once the application has been opened, a default screen will be displayed where we will see the image that Windows currently shows on the start screen. At the bottom we find a dialog box that we will press to find the image that we want to use as a startup image in Windows 10. Before confirming that this is the desired image, we can click on Preview to see how the image will be displayed each time we start our PCs with Windows 10.
As long as Microsoft does not allow us to randomly change our image of the start menu in Windows 10, we will having to keep using this excellent application, so you have to keep this small application safely, since the file hosted on the developer's OneDrive may not always be available to any user.