if you have viruses you should try a trojan scan,

you can use trojan hunter (review)
get the program here

Bridge.dll definition, relationships:
Startup entry for bridge.dll: RunDLL

bridge.dll is related to adware Flingstone Bridge. File bridge.dll is related to adware WinFavorites.

You should check out the spyware removal thread here.
it well help you get rid of the spyware on your computer and remove the error.

Sound problems: Have you updated your soundcard drivers? are the speakers connected, plugged in etc......

who is the soundcard maker?

good luck and welcome to techzonez