1. First of all, you have to move the Desktop tile to the top left corner on the Start screen. See the screenshot below.
After moving the Desktop tile at the top left corner of the Start screen, it will become the first tile. Why we are doing this, you will understand later.
2. Now, on the log on screen type your user account’s password, and press and hold the Enter key.
Do not just press Enter or click on the arrow. If you do that, you will boot to the default Metro Start screen. Holding the Enter will simply use the first tile on the Metro Start screen. That’s how it quickly runs the first tile (desktop) on the Metro Start screen without showing the actual Metro Start screen.
3. Now, release the Enter key after the desktop quickly appears.