Removing all the video kexts in single user mode worked for me as well and i was able to create an account and get to the desktop for first time.
Many thanks
I have a question though :
Which kexts do i need to put back to get full color and resolution?
Samsung RF711
Intel Core i7 2630QM @ 2.0GHz Sandybridge
8GB Ram
Intel HD3000 (integrated)
Nvidia GT540M (discreet)
Hitachi SATA2 750gb