My PC has dual operating system. one is windows XP & another is windows 7 ultimate. my old 5.1 c-media sound card works suitably on XP but it not supporting well on windows 7. What will be the solution for this problem?
The solution might be to find a latest drivers for the sound hardware. I suggest you try the free version of SlimDrivers. It will identify, download and install the latest drivers for your hardware. Just Google the name to find a download location.