How to change the Windows administrator password
The default Windows administrator user has full permissions and cannot be deleted. For these reasons, change this password as soon as possible, and you should use a very strong password.
Caution: Do not forget or lose your new Windows administrator password! It cannot be recovered, and you must reformat the operating system drive. All data on the operating system drive will be lost; however, no data on the RAID (D: drive) will be affected or lost.
To change the administrator password:
1. Press Ctrl+Alt+Delete, and then click Change a password.
2. Type the old password, type a new password, type your new password again to confirm it, and then press Enter.
The default user name and password are admin/admin.
 
You successfully changed the administrator password. Your new Windows administrator password is in effect.