ok so i have a HP Pavilion dv6000, im having problems when i try to record from the internet,i cannot record "what you hear" feature

..i also have a problem when recording with my microphone i plug in
it records therefore it works but no sound comes out when i talk into it
what i recorded plays back though
i used to be able to perform these tasks with my old computers and notebook
is it the notebook?vista?sound card?
does anyone know whats the problem
ive been racking my brain!!!!
thanx