Realtek AC97 / Vista sound issue

[Blind Dragon]

My kids broke the surround sound system I had set up before. So I went out and got a new subwoofer with built in amp and 5 speakers.

HAVE SOUND in the front left, rear right, and the sub.

NO SOUND - center, front right, and rear left

That makes no sense to me as I have been through all the settings and obviously not balance if there is out put on opposite sides and front/back

Any Ideas

Edit: on 2 channels only the sub and front left work, the rear speaker goes out.

 

[turbo1]

you can try downloading the latest driver for your sound from
your motherboard's manufacturer's website.

if you're using the on-board sound,then i guess there's an issue
for sound drivers in x32 & 64 vista version for set ups on 6ch to
8ch speaker systems.

your latest sound driver available is 6.0.1.6202 both for x32 & x64 vista.
not really sure if they're only in beta version.

is the replacement one (speakers) are same model as the old one?