When I play music from any source the speakers EMIT a loud noise, just   for a second, approx six times  during the SONG. I do not know what to call this noise. I guess a noise spike is as good a description as any.

This only started when I had a new hard drive and mother board installed with extra ram.
Help would be appreciated.And info on what software/ hardware used and what o/s is  having this problem ....damage wav/mp3 file..was bios upgrade install or firmware...Thank you. The following is what I have.

Windows XP home edition
An ASUS Motherboard plus an AMD 2500+ processor
512 mb sddr ram
Bios upgrade

The problem occures if I play music or games from the web and if I play wav or mp3 files or any CD music.Have you installed proper drivers? Did you turn off your system before connecting the speakers?Good day.

Yes the computer was taken to the shop for proper installation and then when I came home I connected everthng and then TURNED it on.

I have even tried unplugging speakers left/right and the printer and scanner. I was told that the computer was DUMPING and this was causing the noise via rthe speakers. If true how could one solve this/

Could it be the BIOS?

The specifications show audio as ADI Soundmax 6-channel audio CODEC S/PDIF out interface.

Thank you for this. Quote

Yes the computer was taken to the shop for proper installation and then when I came home I connected everthng and then turned it on.