Windows 10 won't boot, primary partition has become RAW

My Dell 5559 laptop shutdown suddenly due to power outage. After that, when I tried to turn it on, it gave an error:

A disk read error occuredPress Ctrl+Alt+Del to restart

I have been looking at all sorts of solutions for this but seem to hit a wall with every single one.

The SSD drive is recognized when I go to Boot options > System information. Here the volume and its capacity are listed correctly.

I made a bootable USB with Windows 10 ISO and booted the laptop using this. Went to Repair windows option > Command prompt.

When I enter diskpart command and then use list disk, the SSD disk is listed as:

Disk 0   Online   119 GB

Here I have tried several options.

Tried chkdsk /f but it doesn't work since my primary partition where Windows has been installed has turned to RAW.
Tried bootrec /fixmbr but it says that The system cannot find the file specified.
Tried to format and delete the partition to try a clean install using format fs=ntfs and delete volume override but it also returned error The system cannot find the file specified.

What can I do in this situation? Data on this partition is not important and I am ready to format and do a clean Windows installation.

Please assist!