When you see the Surface or Windows logo appears, release the volume-up button.
Press and hold the volume-up button, at the same time, press and release the power button.
Option 1: Access to UEFI settings from Sign-in Screen when locked. When you can't sign in to your Surface because forgot or lost its login password, use these steps below, you can find serial number as quickly as possible. If you still have the original packaging for your Surface, you can find the serial number on the barcode label. Way 2: Find the serial number on the packaging Your serial number is listed under Your Surface. Open the app by typing Surface in the search box on the taskbar. It is the easiest way to find your Surface Serial Number, here's how: 3 ways to find Surface Serial Number: Way 1: Find your serial number on Surface apps If you have trouble finding your Surface Serial Number, there are several other places you might find the Surface Serial Number.
When you are registering your product or requesting warranty service, it needs your serial number. By default, the serial number was printed on the back of your tablet. Microsoft Surface's serial number is a unique identifier that distinguishes your device from all of the others.
