Some how the settings got changed and i can not get the sound recorder to amplify.

I have juggled speaker wire from front to back, taken out one inserted one in front one in back, ,
Th e recording and playbacks show speakers show microphone plugged in, there are 2 microphones shown one enabled
line in working
digital input device working
under windows default sounds is listed
then it shows windows explorer, iTunes, windows photo gallery, windows live photo gallery windows speech recognition

win vista 32b d top,athlon II X 64 630 processor 2800 4 core gigabyte M68M -S2P

I don't remember if it worked after the new mb was put in,, but the internal sound works, just not the external speakers?
tks