Someone could say that this is one of the most regular situations that can arise in our daily life, because without a certain moment we believe that we do not have all the means to work, when they already appear before our eyes, we may say that we no longer need them as before. This is the case that has been mentioned by a few users regarding the Windows 8.1 Start Button.
Nobody knows whether to justify or criticize this type of attitudes, since if the update of Windows 8.1 proposed by Microsoft, has mentioned the integration of your Home Button, The one that you want to eliminate is perhaps a sign of the adaptability that its users have had with its absence, or simply that this element does not keep the same characteristics of what we had previously enjoyed in Windows 7.
Third-party application to disable the Windows 8.1 start button
Once you've downloaded, installed, or upgraded to Windows 8.1 on your personal computer, the presence of this Start Button will always be present on your desktop, to which you will not be able to eliminate it in a conventional way; what you can do is use a third-party application, which in this case has the name of StartlsGone and advantageously, you can use it completely free.
This app is only compatible with Windows 8.1 (how could it be otherwise), a tool that does not have any type of interface to configure it, but rather, only it is housed in the task bar of our operating system; from there we will only have to activate the option that says "Run at startup" and voila, every time our operating system starts, the much-missed Start Button will no longer appear on our desktop screen.
More information - Windows 8.1 places a different start button than the traditional one, New Start Button Functionalities and Features Leaked in Windows 8.1
Source - nirmaltv