I suggest a forum search for ASUS as there have been a number of topics relating to a problem with an asus application Asus Data Security Management, which is causing a conflict.

See http://forum.avast.com/index.php?topic=29956.msg246781#msg246781
http://forum.avast.com/index.php?topic=29719.msg244489#msg244489
http://forum.avast.com/index.php?topic=29627.msg245057#msg245057