black screen and mouse point after boot

hi
i just installed kali linux (dual boot with win8) on my pc :
cpu : intel pentium dual-core E5400
graphic : NVIDIA GeForce 8400 GS
ram : 4gb
but before install kali i had fedora , ubunta , back-track but no problem like this
i downloaded kali linux Kali Linux 32 bit 1.1.0a
and i use almost 100gb HDD for it
but after booting its just a black screen with mouse point
i tried to install nvidia graphic driver but when i use this commands :
apt-get install -y linux-headers-$(uname -r)
apt-get install nvidia-kernel-dkms
==: no package found
how can i fix it ? :(