I copied a fresh iso of Kali onto a USB stick. I copied with win32diskimager and universal USB Installer.
Both work on a Lenovo X200 (P8600 8GB RAM, HDD).

Now I have another computer, Centrino Duo, 1,5 GB RAM.
But it is not booting. both ways stop somewhere at boot, when I press Enter there only is "initramfs" as commandline (where in a terminal would be root@kali, how is this line called?)

Why is it not working on this laptop?
Live medium only, no install.