resource conflict or bad hardware/driver??

Hi,

I have a HP Pavilion PC with Intel P III, 667 Mhz, 10 GB HDD, 64 MB RAM, Internal modem with Windows 98SE OS.
My sound card was Aureal Vortex (Au 8810)

A month back, i upgraded my PC to Windows XP, 40 GB HDD and 128 MB RAM and have taken a new broadband connection.

Now my sound is not working. When i checked my sound card details in 'Device Manager' it shows as UniModem Half duplex Audio" and Aztech SoftK56 PCI Modem is shown as my audio device. i do not know why my sound device is listed as 'Aztech' when it was originally 'Aureal Vortex'.

For a couple of days, i was able to get sound but after that again it got lost and i am unable to hear any sound now. Occassionally while booting, a resouce conflict error is thrown.

Also, when i click on 'Volume Control', it shows me the message "There are no mixer devices avaialble. To install mixer devices, use Add/Remove programs options from the Control Panel".

When i try to play any music file, i get some message, "There may be no sound card on your machine or your sound card driver may have been corrupted"

i tried searching the net but most solutions given on the net have not worked. i updated the drivers too but in vain.

How should i proceed now??

Yell you posted your problem here
http://www.coderanch.com/t/132343/gc/sound
and it seems that you have already resolved your problem.