Hold Power button for ~10 seconds → device turns OFF
Turn it ON → when Windows logo appears, force shutdown again (hold power)
Repeat this 2–3 times
On next boot, you should see:
“Preparing Automatic Repair” → Advanced Options
Click Troubleshoot
Click Reset this PC
Choose:
Remove everything
Choose:
Local reinstall OR
Cloud download (cleaner, needs internet)
Confirm → Reset starts
--
You need a 16GB USB Drive.
https://support.microsoft.com/surface-recovery-image
Sign in
Select: Surface Book 3
Enter serial number (on bottom of device)
Create Bootable USB
Format USB to FAT32
Extract downloaded recovery image to USB
Boot Surface from USB
Insert USB into Surface
Hold Volume DOWN (-)
Press and release Power button
Keep holding Volume Down until Surface logo appears
Reset
Choose language
Click Troubleshoot → Recover from a drive
Select Fully clean the drive (complete wipe)