If none of the above work then we need to to use something advanced and guaranteed. Introducing PC Unlocker 4.5, a bootable utility that lets you easily reset the administrator password in Windows 10 and earlier versions of Windows. The professional and enterprise editions include support for Active Directory passwords.
Before resetting Surface password, you need to create a PCUnlocker USB drive from another computer you have access to. Download the ZIP file of PCUnlocker Enterprise (trial version) to your local hard drive. When the download is complete, extract the contents of the ZIP file and you should see an ISO file called pcunlocker.iso. 2b1af7f3a8