Microsoft recommends running Windows Updates before running the Surface Diagnostic Toolkit

https://support.microsoft.com/en-us/help/4037239/surface-fix-common-surface-problems-using-surface-diagnostic-toolkit

The above website tells you that you should update Windows 10 and then the Surface Drivers and Firmware. It takes you to here.

https://support.microsoft.com/en-us/help/4023505/surface-install-surface-and-windows-updates