no devices displayed in device manager

[Charles]

everthing seems to be working, but i have no sounds and i cant add no hardware to my laptop. when i click on the icon nothing happens.
all that really matter is that my sound dosen't work, it says it is not installed. i tried dxdiag, but that doesnt help
im thinking about formating my hard drive and reinstalling windows XP home
will it bring it back to its original version
all i want is my SOUND BACK

thanks

[merlin_2]

what laptop is this .....did you upgrade it to winxp?....have a look in the  bottom task-bar to your left the speaker icon click it and see if the mute box is unticked...