Kudos to me.. :D
Finally, solved it my self... :D
Deleted finger print data, Uninstalled both Driver and simple pass, restarted my laptop and then installed the driver... restart again, installed Simple pass.. and viola!! its done... ;)
btw am using Validity sensors version 4.3.304 and HP Simple Pass 6.0.100.252
they are far more better than my older drivers.. and are not listed in Driver's list for my Laptop on HP.com!