Powerbook volume not working

[mcervantes]

Powerbook G4
version 10.5.8

The volume is not working
when i try to raise the volume, a crossed out symbol pops out
Does anyone know how to fix this problem??

 

[Springerone]

Go to System Preference and click on sound. That should tell you what is happening.

 

[mcervantes]

it says
Internal Speakers
Built in Audio
The selected device has no output controls