suggest: unZip the setup package to C:dashboard (make sure that the path cannot contain non-unicode characters! )
right-click the setup.exe and select "Run as Administrator"
Input the installation key code(30-day trial):
DB102-6V73108-UXGH1AX-1A3XEH
download link：http://www1.sap.com/software-free-trials/index.epx