Sierra usb installer

Hi, I have created usb installer of sierra (download to appstore) with unibeast 7.0.1.
When i launc the installation the pc is blocked with the white apple and with the flag -v the screen is like:
=======_ and then is bloched.
My hardware is:
CPU: intel core 2 quad cpu q6600
Motherboard: intel dg33bu
Video Card: amd radeon r7 200 series
Ram: 4Gb ddr2 800MHz
Any suggestions?
Thank you