Unable to install Debian 8

[Song Jin]

I can't install Debian 8.
Resource used: USB stick with DVD1 part of iso image of Debian 8.4 downloaded 
today.Problem:     no matter which combination I tried, the Debian always hangs 
at boot-up stage. The only message on screen was: "Loading, please wait"
grub.cfg file does contain correct root=UUID, not simple root=/dev/sda/