Regars!

Hi guys! First of all, nice to meet you all! I`m Lukas, and i have some problems with sound.

Yesterday I reinstalled Windows XP and I wanted to install drivers for sound card but it says: Install Realtek HD Audio Driver Failure.
I tried others, and it`s the same answer.

Do you have any solution for me?
[ sorry for my poor english ]
Thank you,
..... Lukas