Hello,
Thank you for posting in Microsoft Community forum.
Based on the description, I understand your question is related to blackscreen no boot.
Restart the computer, press and hold the F8 key as your computer restarts. The machine will show advanced boot options.
Open cmd, and run below commands:
Replace <recovery password> with your 48-digit recovery key
manage-bde -unlock C: -recoverypassword <recovery password>
If this is a new pad, it might still under warranty, consider bring it to reseller for a full scan and fix.
Have a nice day.
Best Regards,
Molly