usb boot troubles

Oct 11, 2018
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I have a gigabyte a320-s2h motherboard and its driving me crazy... i downloaded the iso file 64 bit on a MAC OS ( this might be why it wont work??) and copied it to my usb after erasing it and formatting it to EXfat ( windows forum said fat32) but mac os doesn't have that option.

Once the iso file was copied over to the usb i plugged it into pc started it up pressing the DEL button changed the bios to boot from the USB and it wont work once i save the settings and restart and press F12 I get a blank screen with a _ and that is it...


Please help this is driving me crazy