Windows 10: Windows gone after Factory Reset

I'm freaking out currently, I factory reset my PC and now my Windows 10 Pro is just gone! I got this self-built PC from my step-father about a year back and everything was fine. But yea everything I try with my microsoft account just won't work, I'd really love to get help on this if anyone knows.

:)

 

Diskpart : there are no fixed disks to show.. Factory reset gone awful

Hi everyone, I was asked to factory reset an Asus laptop and install a win 7 on it, while starting to install the win 7 I got stuck with the "no device drivers were found", searched for some tutorial on YouTube, found this vid: , followed the command codes step by step on MS-DOS : ( Diskpart >>> list disk >>> select disk 0 >>>> Clean >>>> create partition primary >>>> format fs=ntfs quick) and now I completely lost the disk 0 with all system files, no hard drive showing as a boot option in the BIOS. Am I screwed ? Is there a way to create or reactivate the internal HDD ?? Thank you in advance for your help

 

Why did the startup window get cleared?

I didn't missed any step, the list was gone and gone , even after using lot of programs the programs were not listed in that list.

 

Recovering Windows License After Factory Reset

I am planning to perform a factory reset on my laptop. I have a few concerns about my Windows license:

1. Will I be able to recover my Windows license after the factory reset?
   
2. Is there any specific step I need to take before performing the reset to ensure my license is retained?
   
3. How can I verify my Windows license information before the reset?