ASUS P5B-E drivers update causes antivirus Problem

[jennifer]

Hello,
By updating drivers for my motherboard ASUS P5B-E, I caused a problem that seems important. By this "update" I stopped the installation of Symantec antivirus programs that was underway. I can not delete files Symantec installed in the directory (refusal of the trash).
But most annoying is that:

1) I have no sound output except when I plug in a microphone!
2) My antivirus AVAST no longer works and despite an uninstall, I can not reinstall it
3) I can not save the footage from my DV camcorder, the latter being recognized as camera!

Help me please!
Thank you.

[Raine]

Try checking after restoration and you can probably remove the files symantec and resolve your problems and please note that do not install 2 antivirus on the same system