Bootable USB not booting

[Patrik Selin]

Hello!

Why bootable USB stick doesn't work? I would like to install Windows 8 and to update hard disk driver. When I select an "Bootable Add-in Cards" option from the boot list, when the error message appears: Disk boot failure, insert system disk and press enter

Motherboard: GA-78LMT-USB3

 

[jsmithepa]

Unless you got the Windows-on-a-Stick from Microsoft, you gotta manually prepare the USB stick to be BOOTABLE. Google "Windows install USB" 'cuz I don't have it on top of my head.

 

[Patrik Selin]

I know that. The problem is that the PC is not booting from a bootable USB.

 

[Dee Kay]

Try another USB port that is black instead of blue. Make sure the stick is in 16 or 32 bit fat, not NTSF. Try another thumb drive if you have one, or try reading that one from another PC to make sure it is good. Switch between CSM, legacy, or disable UEFI to see if it boots then. See these links for options is still unable to make it work. http://www.intowindows.com/fix-cant-boot-from-usb-drive-windows-78/
http://www.tomsguide.com/answers/id-2034007/laptop-booting-bootable-usb-drive-solved.html