I want a live USB to investigate it's tools and become familiar with Kali. However, I have been very unsuccessful at creating a live USB. I am running windows 10 currently, I am booting in UEFI, and I tried recently to use Rufus, Unetbootin, Linux live usb creator and Live Usb Install to write to the USB. I have verified the checksums and they are all correct. Secure Boot is disabled but, I just can't seem to get it to work. I also tried several kali linux iso (2016.1 amd64, 2016.2 amd64, light 2016.2 amd64 and Kali 2.0 i386) and several usb pen too but nothing works: everytime i get "boot error" (or "SYSLINUX 6.03 ETCD Copyright (C) 1994-2014 H. Peter Anvin et all Failed to load ldlinux.c32 Boot Failed: press a key to retry when using Rufus).
Even if i'm using ISO files (all downloaded from https://www.kali.org/downloads/) i tried Win32DiskInstaller too but I get the message, "USB needs to be formatted before use" just after writing and usb capacity seems to be reduced. I also tried to format it in FAT16 but nothing changed. Please help, at this point i don't even figure out what i still can try.