how to install os freshly in a laptop in which everything has been wiped out.

[Mahadevan00787]

How to install OS on a laptop with emmc in which everything has been wiped out?

 

[Barty1884]

Which laptop specifically?

eMMC shouldn't change anything really, providing the laptop has the ability to boot from a USB or disk (and it should, although assuming USB over a disk).

Which OS?

If Windows 10, use another computer to download here: https/www.microsoft.com/en-ca/software-download/windows10
Create bootable USB and then follow the user manual for your laptop to boot from it & install.