Unable to install windows 7 UEFI fail

I'm trying to install Windows 7 x64 on my acer chrome book 11 (currently on Windows 8 x64 & got nVidia driver memory leaks, that's why I'm downgrading) but once I enter te UEFI and select my USB device to boot I get a black screen with a white blinking text indicator. And nothing happens it just stays that way until I reboot or unput the USB device.

Thought it could be a USB 3.0 problem but USB 2.0 ports dont work either. I have done manny OS intalls before never had a problem like this...

System Specs:

CPU: 1.83GHz Intel Celeron N2940 processor (quad-core, 2MB cache, up to 2.25GHz)
Graphics: Intel HD Graphics
RAM: 4GB DDR3
Screen: 14-inch 1,920 x 1,080 display
Storage: 16GB eMMC
Ports: 1 x USB 3.0, 2 x USB 2.0, HDMI, MicroSD slot, headphone jack
Connectivity: Intel 802.11ac, Bluetooth 4.0
Camera: HP TrueVision HD webcam
Weight: 3.74 pounds (1696g)
Size: 13.54 x 9.45 x 0.7 inches (344mm x 240mm x 18mm) (W x D x H)