bad streamci.dll image

[dejeisback]

i restored my comp. recently 4 diff. times and each time when its reinstalling my Realtek audio driver a rundll32.exe - bad image error comes up saying " The application or DLL C:\WINDOWS\system32\streamci.dll is not a valid Windows image. Please check this against your installation diskette."

does anyone know how to fix this because it error is preventing me from having sound on my comp.

Stevene DeJesus