No subwoofer with 5.1 sound.

Hey,

So i have on-board realtek HD audio card (6 jack) with my 5.1 system connected via 3 jacks (front , surround & sub). The problem is that i've just run the auto calibration thing with the microphone and it worked fine and calibrated all of my speakers, but now my subwoofer doesnt work with ANY playback at all inc. movies and music etc.

My system automatically does its own "speaker fill" if just a stereo input is connected - which is what it was until i performed the calibration tool. And i know that all of the jacks are connected in the proper place because when i go into settings - (the screen where you can click on each individual speaker to test them), they all work fine.

I've noticed that if i use the EQ tool in WMP and turn it all to the max, i get some bass through - but only the real low-freq. stuff. It's not outputting the full range.

Like i said about my system working with just a stereo input - currently i can leave Front and Surround plugged in and unplug the Sub / Center cable - but then , obviously, i lose the speech as its coming from the center speaker.

Please help :)
Thanks

EDIT: Oh and also - everytime i download the realtek drivers for it - it says "This file cannot be unpacked.." so i googled that problem and tried installing windows installer 3.1 - which then told me i haven't got enough storage to perform the request. ¬¬

sorted it :)
needed the official driver :)