Humming sound with emulator on windows xp

Question

When I start any emulator on ma PC, I get annoying sound thru the speakers.. Like a filtered noise.

It doesn't stop unless I restart my PC... I hv windows xp and two sound cards.. One was inbuilt with motherboard. I plugged another one when the first sound card stopped working.. Help

Answer 1

Remove one sound card then try it again :D