backtrack 4 Live USB help!

hi, recently i've updated my laptop and with that i have also update my backtrack to backtrack 4. i've loaded backtrack 4 to a USB stick and it is bootable. my bios is in boot order for a USB stick to be first.
after i restart my laptop it starts to boot from the usb stick but nothing other than an underscore appears and the underscore just flashes.
i loaded the iso image with linux live usb creator and the iso image works perfectly fine in virtual box i just need help with getting the iso image to boot from the usb.
thanks in advance

Say it with me "U-n-e-t-b-o-o-t-i-n" UNetbootin - Homepage and Downloads

unetbootin did not work for me when i first tried

if it does not work for you also you could try Universal-USB-Installer

google it, Ubuntu uses it also for usb install

the one i used is Universal-USB-Installer-v1.7.9.exe


Cheers

Nix

i only can recommend ,,HOWTO,, section of this website.

I have some issues:
I succefully created a USB disk and installed BackTrack 4 Beta Release ISO.

Is this the correct version which I choose for USB?

There comes 4 options

BT4 Beta - Console
BT4 Beta - Console on FB
BT4 beta MSRAMDUMP
Run Memtest Utility

1st 2 options hangs system

what should i do?

Ok, now so what I did is download latest version of Backtrack 4 ISO and put it on USB.

I have now 10 options:

Default
Start BackTrack Framebuffer (1024x768)
Start BackTrack Framebuffer (800x600)
Start BackTrack Forensics (no swap)
Start BackTrack in Safe Graphical mode
Start Persistent Live CD
Start Back Track in Text mode
Start Back Track in Graphical mode from Ram
Memory Test
Boot the first Hard Disk

None of the start backtrack functioned worked for me.. Please some help me where I am doing mistake