Hello all,

Running BackTrack 5 from USB

I have a Dell XPS 15z:

2nd generation Intel® Core™ i7-2640M processor 2.80 GHz
NVIDIA® GeForce® GT 525M 2GB graphics with Optimus
8GB Shared Dual Channel DDR3 1333MHz Memory
Intel© Centrino© Advanced-N 6230 & Bluetooth 3.0

When I try to boot from my USB,
after I chose the Kernel, it loads some stuff, but I always get a Black screen,

I've tried to use the command nomodeset, noapic acpi=off, and many others.

also to change text splash vga=791-- to text splash vesa--

also the BackTrack no DRM ( with this kernell I have an error instead of the black screen:
(initramfs) Unable to find a medium containing a live file system )

Am I missing something?