Password logon no longer possible - too many failed attempts

Hello, i downloaded and install SAP NetWeaver 7.03 64-bit Trial to use and programming in ABAP. First sorry for my bad english. I have installed and tried to log in to the sap system.. I tried several tiems to join the system with the standard user DDICandSAP and their password. It dont function. I get the message: "Password logon no longer possible - too many failed attempts" The BCUser dont function. I cant login in the system. Can anybode help please, I treid today the whole day, but it dont function. Thanks mates..

best regards...