I removed my C-media audio software from Control Panel,and now I don't have a disk and don't know how to get back sound on my computer.When I download,for example,Realtek or Vinyl AC'97,and when I want to install it,it seems to be alright,but when I go to Control Panel-Sounds and Audio devices-Hardware-Properties,it says for Realtek that WINDOWS CANNOT INITIALIZE THE DEVICE DRIVER FOR THIS HARDWARE.And it is like that for every software I download.I have Windows XP.Please help me.