Pro Tools First can't hear anything

[musicman1985]

Hi peolple,
I am new to using Pro tools First. When I start the app I get an error message during stratup but the app still works.When I press the play button I cant't hear anything,not even the drums.
This is the sys report:
Missing Inputs
The input "Input 1" on track "Rhythm Guitar" is not available in the current I/O setup.
The input "Input 1" on track "Lead Guitar" is not available in the current I/O setup.
The input "Input 1" on track "Male Vocal" is not available in the current I/O setup.
The input "Input 1" on track "Female Vocal" is not available in the current I/O setup.
The input "Input 1-2" on track "Audio 3" is not available in the current I/O setup.
The input "Input 1-2" on track "Audio 4" is not available in the current I/O setup.

Also when I look on the playback engine there is no output device.

Thanks for help