Problem with installing Bumblebee,Cuda etc. Lenovo Y510P

Hi all,
I have a problem with installing Bumblebee to my Lenovo Y510P laptop (3GPUs 1 integrated intel and 2 Nvidia GeForce GT750Ms). I have Kali 1.0.8 installed on HDD dual boot with Windows 8.
I followed this thread/guide

HTML Code:

https://forums.kali.org/showthread.php?21956-%28Guide%29-Installing-Nvidia-Bumblebee-CUDA-for-Optimus-enabled-Laptops&p=35420&viewfull=1#post35420

but I got stuck at two stages:
When I had to restart Bumblebee (/etc/init.d/bumblebeed restart)
I removed (physically) my secondary GPU and I successfully restarted Bumblebee but after I got stuck again when I had to run "optirun glxspheres64"

In the 1st case the output was the following:

Code:

root@kali:~# /etc/init.d/bumblebeed restart [....] Restarting bumblebeed: bumblebeedERROR: could not insert 'bbswitch': No such device . ok

In the 2nd case the output was the following:

Code:

root@kali:~# optirun glxspheres64 [ 171.908984] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected. [ 171.909044] [ERROR]Aborting because fallback start is disabled.

And also I have a strange lspci | egrep 'VGA|3D' output (no device name):

Code:

root@kali:~# lspci | egrep 'VGA|3D' 01:00.0 VGA compatible controller: NVIDIA Corporation Device 0fe4 (rev a1) 07:00.0 3D controller: NVIDIA Corporation Device 0fe4 (rev a1)

I can't adjust the resolution of my screen neither, in the Display settings it says: Unknown device and I cannot set it higher than 1024X768. Basically I cannot do anything which requires display driver.

Any help is greatly appreciated, I have searched the whole internet and nothing helped. :(