Compaq Armada E500 Notebook "keyboard keys louder others" Questions

...keyboard. These keys can do multiple things depending if the blue function key is press down first. They can control things like switching between internal and external displays, turning up/down the ...

...keyboard and Ctrl+Alt+Del or Win key does nothing. The power light, and all other light are still working, also the fan starts to run a lot faster (louder) and it just stays in that non-responsive ...

keyboard you should see a blue FN key. Function key. Then if you look further on other keys you should see a speaker key louder and lower and even a mute key(the one with a cross). If you press the FN