Bdselfpr Error

i am using bitdefender internet security 2012 build no 15.0.38.1605 and get the following errors in event viewer

event id 7026 The following boot-start or system-start driver(s) failed to load:

bdselfpr

and

event id 7024 The HomeGroup Listener service terminated with service-specific error %%-2147023143.

these errors have occurred after installing the above mentioned product and has led to slow startup

plz help

my config are win7 sp1

c2d 2.93

4gb ddr3