Finally Microsoft made configuration options which will allow you to boot directly to the desktop in Windows 8.1. Now you don't require any third party application to boot Windows 8 directly to the desktop instead of the Start Screen.
Enabling this option just required few clicks and its let you access the desktop directly like previous version of Windows after logging in.
1. In Windows 8.1, right click on the task bar and select Properties and go the Navigation tab.
2. Under the Start Screen section, check Go to the desktop instead of Start when I sign in.
3. Click Apply and OK, then reboot
You are done!!!