audio problem with my sony vaio laptop and x64 problem

> right, i have two issues, the first one and more pressing issue is that my
> laptop isn't giving me sound. i went on the help and support logo thing
> what
> was already on vista but it didnt provide me with much information. i have
> a
> intel high definition sound card in my laptop(for people who have this
> sound
> card and are experiencing issues aswell) i looked on the device manager as
> suggested on the help and support banner but there is no question mark, no
> nothing in fact it says its working fine. so how can my sound card be
> working
> fine but not actuly producing any sound? does anybody have this same
> issue?
> if you do have you got any idea on how to fix it, it seems very strange.
> and
> also the volume says it is a max in the master volume setting so cant be
> that
> its muted or anything.
>
> the other issue is that slap my forehead on stupidity i installed the x84
> version of vista (32bit) when i originally wanted to install the 64 bit
> version. so when i put the disc in it told me that it did not support the
> x64
> version of this soft where and told me to contact my hardware manager.
> does
> anyone know about this aswell, can you put the 84 bit version of vista
> disc
> in and install it while the 34 bit version of vista is installed.