It wont have a factory reset as such as Windows 10 was NOT installed at the factory.
But you can do it from a USB flash drive as follows:
* Download the Windows 10 “MediaCreationTool” and make a bootable USB flash drive.
This takes you to the video example for Lenovo:
https://support.lenovo.com/mx/en/videos/vid100788
I believe pressing <F12> (don’t type the angle brackets) during powering on brings up the boot menu for Dell/Alienware .