Solved Problem with Admin permissions in Windows8 Pro

I have login to Windows 8 with my Microsoft account (Outlook.com), and when i try copy or create file to
C: driver, i get the message havn't the permissions to perform the operation.

Control Panel -> Users Accounts -> I see this Microsoft username is Adminstrator.
What can do with this problem plaese?

Thanks,
Have a nice days.

help please..