Hello BananaOverApple,
Thanks for reaching out to Microsoft Community. I understand how important for you to reinstall Windows on the device.
In this case, to wipe out everything including the partition, I'd highly suggest performing a USB recovery image. This option reimages the entire device, including the partition on the hard drive. It is the most complete form of reset. You must have at least 16GB/32GB of USB Flash drive and it must be formatted to FAT32 prior to downloading the Recovery Image.
To proceed, thoroughly follow the procedures in Creating and using a USB recovery drive for Surface - Microsoft Support.
Let me know if that works. I'll wait for your response.
Regards,
StevenK