HDD failure of a Inspiron 15 3000 Laptop

My friend's laptop shows this when booting up :

I used a bootable USB to load the OS in the USB and tried to check the contents of the  laptop's hard drive but asks for a password for BitLocker which is not known.

The machine is i3 (possibly 7th gen) Inspiron 15 3000 Laptop.

What has to be done now ? Replace the HDD with a 1TB  SSD one ? Or can the HDD be repaired ?