Hi GensoD. :)
Try to reset your administrator password from the hidden administrator account.
From an elevated command prompt run these commands:
net user administrator /active yes
net user administrator *
I get:
C:\>net user administrator /active yes
The command completed successfully.
C:\>net user administrator *
Type a password for the user:
Retype the password to confirm:
The command completed successfully.
You'll find the help of the command writes
/active:, with the colons, but we'll get an error.
If you press
enter when it asks you the password, the password will be "blank" (i.e., nothing to insert in the password entry).
Then sign out from your current account, sign in to the administrator account and try to reset the password of your other account with administrator powers.
If this won't work, you can try to create a new profile named like you prefer, log into the new account, then import data from the account you are trying to recover to the new one from
Control Panel\System and Security\System, click
advanced system settings, click (user profiles)
settings,
select the "lost" account, click
copy to, select your new account (and start the copy clicking ok/copy/save/whatever button appears to confirm the task).
Obviously, I suggest you to make a system backup, with windows or your preferred tool, before you try all the procedures.
Examples of other tools that can do the backup job: aomei backupper standard version (free) and paragon backup and recovery 16, this last is free until 30th November 2016.