Hi Patricia,
If you want to return the computer, we recommend resetting it. Resetting lets you choose whether to keep your files or remove them, and then re-install Windows.
To reset your PC:
- Click Start, then Settings.
- Select Update & security.
- Then, Reset this PC.
- Lastly, click Get started and choose an option.
Also, check this link for Recovery options in Windows 10.
We look forward to your response.