Hello everybody!

Who can help me, I tried a lot but i still can not install Kali linux on my 64 bit laptop.

This is what i've already tried:
- reinstall Kali Linux on my USB
- reinstall this program on my laptop.
- of course i followed the steps while installing it, but the process gives an error whith failed to install.
- I've tried to burn with win32 disk writer, but it didn't worked

How did i tried to install Kali linux.
I have downloaded Kali linux 64 bit ISO file from kali.org/downloads
I have installed unetbootin
I plugged in my usb and burned Kali on my USB with the program Unetbootin
I changed my BIOS
I have restarted the computer and followed the install proces.

I have read on the internet that my file could be corrupt? But than nobody can have a proper ISO file installation???
Other people said that unetbootin is the troublemaker. Because of unetbootin the file on the USB will be corrupt. They said that you should use win 32 disk writer. That didn't worked for me, because my win 32 disk writer can't read any ISO file.
Another problem that ocurred is that i couldn't login. I know that username should be root and pasword is the password you have chosen during the install, but it did not work for me either.

Who can help me and give me some advice?