quantum112

Hello. I own a DFI nF4 Ultra-D motherboard that has an integrated 5.1
Realtek ALC850 sound chip. So far I have been using XP and I was using the official nVidia drivers which you can get from the nVidia site, and with it came a program nvmixer with which you could easily switch from headphones to 2 chan to 5.1 etc. Everything was working fine. Now I recently put on a Vista installation and nVidia does not offer drivers for my sound chip, so I've downloaded the ones from realtek's website. The problem now is that when listening to music at first I didn't get absolutely any output on my rear speakers at all, until I turned on the speaker fill enhancement option for my speakers in control panel, but the volume of the front speakers greatly outpowers the volume of the rear ones and I can't hear anything from the rear speakers until I put my ear on them.
When I try to test speakers in the speaker setup all of the speakers play back completely normally and equally loud and the rear ones work perfectly. But in music this is not so, the rear ones are very silent and when I use the room correction tool I can hear the volume from the rear speakers when I boost them +10 dB but then all the music is weird and the sound from the rear is distorted - and most of the time not all channels come through- for example on the front you can hear voice and guitar and drums but on rear u can only hear guitar etc...On XP everything worked fine, but I also had to compensate because the rear speakers were a bit further (I try to make realistic surround setup) behind me and i had to lower the front ones to make the rear ones hearable. No codecs or drivers so far have helped me solve this. Any suggestions? Thank you