Each time you start your computer, or you resume from standby, the lockscreen appears. You must click or tap on a random keyboard key to proceed. The goal of this FAQ is to explain how to disable the lockscreen of Windows 8.1.
Via the Group policy editor:
This method can only be used if you are running Windows 8.1 pro Edition.
Log-in with an Administrator account.
Press Windows + R to open the Run tab
Type "gpedit.msc" and confirm by clicking on "OK".
In the "Local Group Policy editor" and click "Computer Configuration" > "Administrative Templates" > "Control Panel" > "Customization".
Select the "Do not show the lock screen" option and change the value from "Not Configured" to "Enabled".
Click on Ok to validate.
Via the Registry:
Press Windows + R to open the Run tab.
Type "regedit" and confirm by clicking on "OK".
Select HKEY_LOCAL_MACHINE > SOFTWARE > Policies > Microsoft > Windows.
Create a new DWORD 32-bit and name it as "NoLockScreen".