That is odd.
I don't know if this will help
right click start button
choose powershell (admin)
type
SFC /scannow and press enter
once its completed, copy/paste this command into same window:
Repair-WindowsImage -Online -RestoreHealth and press enter
SFC fixes system files, second command cleans image files, re run SFC if it failed to fix all files and restart PC
i found an answer that only works for WIn 10 Pro -
https://serverfault.com/questions/8...ing-elevation-for-regular-users-in-windows-10
So its treating your admin account as if its a standard account, asking for name & password.
you might want to create a new local user, make it admin and maybe swap to using it.
To give the new account same access as current one, while logged into old account, copy the contents of that users folder in c:/users onto the new users foiler in that directory. Then all you need to do is login to programs like steam and Onedrive (examples) and no need to reinstall win 10
https://support.microsoft.com/en-au...-create-a-local-user-or-administrator-account