Locked error went away but couldn't reset this PC error still remains!
Will I loose all my data ? If yes is there any way to save it?
You will with a clean install.
If you like, you could try refreshing Windows 10 by booting from your installation media using OPTION ONE on the first page here instead.
I am not prompted for installation media.
You'll need to boot from your installation media instead.
Same error while refreshing couldn't reset....
It's looking like a clean install may be needed then.
You could try creating and using a Live Peppermint USB/DVD to back up your files with.
Peppermint Live CD/DVD/USB - Create for Emergency Backup - Windows 7 Help Forums
I have backup of installed apps. I used easus to do backup home.