There looks like there is also a soundcard in one of the PCI slots. Nothing obvious is printed on the card - the card has speaker outputs - but they don't work.
How do I check if it is a soundcard? There is a 'C-Media AC97 Audio Device' indicated in 'Sound and Audio Device'
Also, do I need to uninstall anything before upgarding (to Creative Sound Blaster Audigy SE 7.1 and SAPPHIRE TECHNOLOGY Radeon 9550SE 128 Mb) ?