I went across the street to fix my neighbors pc, put 2000pro in it as an upgrade from win 98 so he wouldn't lose his stuff. drivers for sound cant be found in C: in win 98 dir or 2000. Don't know mb manufacturer but here is what I know sis5600 440bx chipset intel celeron 300 mgh processer acer pc. I'm guessing it's a pc chips or ecs by tan color but can find no markings. The bios are american megatrend.