GIGABYTE GA-78LMT-USB3 USB devices do not work, and can not boot from USB flash drive?

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Paul Ferguson

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Aug 28, 2014
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So, I have a GIGABYTE GA-78LMT-USB3 motherboard in my new computer I just built. None of the lights come on, on my keyboard, mouse or flash drive that I want to boot with to install Windows. When I start up the pc, it says something about IDE port (Sorry, can't check what it actually says at the moment) and then gives me a disk boot failure and tells me to insert system disk and press enter. A PS2 keyboard will work to navigate to bios and boot devices, so is there anyway to boot from my USB flash drive, or do I need to find a CD drive and a disc? I would appreciate some help.
 
Solution
Chicano
The USB functions are already enabled by default in the BIOS, so all you have to do is either change the first boot device to USB-HDD or better yet use the F12 Key to manually boot the USB Flash drive.

When the BIOS starts to Post, press F12 a few times > this will access the BIOS Boot Menu > select USB HDD > Select the USB Flash > Start the installation... before this, make sure you have connected the USB Flash drive to a USB 2.0 port... USB 3.0 will cause issues before installing the USB 3.0 drivers.

Download Gigabyte GA-78LMT-USB3 (rev. 4.1) English user manual in PDF
http://www.nodevice.com/download/user_manual/gigabyte+ga-78lmt-usb3/330064.html

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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
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35,490
The USB functions are already enabled by default in the BIOS, so all you have to do is either change the first boot device to USB-HDD or better yet use the F12 Key to manually boot the USB Flash drive.

When the BIOS starts to Post, press F12 a few times > this will access the BIOS Boot Menu > select USB HDD > Select the USB Flash > Start the installation... before this, make sure you have connected the USB Flash drive to a USB 2.0 port... USB 3.0 will cause issues before installing the USB 3.0 drivers.

Download Gigabyte GA-78LMT-USB3 (rev. 4.1) English user manual in PDF
http://www.nodevice.com/download/user_manual/gigabyte+ga-78lmt-usb3/330064.html

 
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Solution
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jmamos

Distinguished
Aug 8, 2011
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I get the BIOS Boot Menu, I use the arrow keys to highlight "USB-HDD", then hit enter, and then the USB-HDD is ignored and Windows boots from the Hard Disk.

Any suggestions?

I know my USB port works, because I used it today to create a bootable USB device.



 
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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
29
35,490

Sorry for the delay in answering... I've been away for quite a while and only check occasionally for answers I may need to respond to. You may have solved the issue by now but in case you haven't, try the following.

1. You may need to enable/turn on USB support in the BIOS

2. You may also need to enable Legacy USB support

3. Set the USB-HDD as the first boot drive

4. Press key F12 to select USB-HDD as the boot device

5. Both 3 and 4 may need to be used to boot from the USB-HDD, and the USB flash drive should have obviously been made bootable.

6. You can also try disabling the HDD, and CD/DVD drive to stop them from interfering in the USB-HDD boot process, then make the USB-HDD drive as the first boot device, and use the F12 key to select booting from the USB-HDD drive.

7. If none of these suggestions works, try with a different USB flash drive, update the BIOS, set the BIOS to failproof default settings.

8. Still nothing?, try a different Bootable USB drive maker application.

 
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