can't boot installer

(SOLVED) Hey 'im Julien i Actually woks on: Gigabyte Z270DP -D3 Intel I7 77K SSD 1 TO 16 GO RAM PCIE bluetooth and wifi and Keyboard and mouse PS/2 I had all setting recommended on my setup computer. look pictures Put my Boot usb, run to install mac os High sierra. look pictures After the...

Hey there! i have a problem, that make me mad for hours. first of all this is my build: i5 6600k gigabyte z170x-gaming 5 2 x 8 gb Crucial Ballistix dddr4 250 gb Samsung 850 evo no graphic The computer was successful built (windows is installed). I created a bootable usb after the installation...

I can't boot into the installer, I have a toshiba C50B laptop, and a DELL Dimension 520, I've tried everything under the sun, multibeast both 10.10 and 10.11 I've tried older bootloaders (I have an array of discs) with 10.6 10.5 even, It's not a rush thing as I also have a Macbook pro retina and...