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USB Flash Drive not showing up in BIOs

Hey guys, I'm making the move up to windows 8.1 from windows 7 but here's my problem. I have everything ready to go for install but my problem is when I start up and go into bios to select my flash drive as the bootable device says disabled. How would I go about enabling it?

EDIT: My mobo is a Asus Crosshair V Formula Z
Reply to Spartan191
15 answers Last reply Best Answer
More about usb flash drive showing bios
  1. Is there a lock switch of somesort on the drive itself ?
    Reply to patrick47018
  2. patrick47018 said:
    Is there a lock switch of somesort on the drive itself ?


    No, it's just your usual flash drive. I did just check and there is not one.
    Reply to Spartan191
  3. Enable the option to boot on flash drives on your BIOS.
    Reply to cinnamon cider
  4. cinnamon cider said:
    Enable the option to boot on flash drives on your BIOS.


    Tried it, took me straight to my regular start up screen.
    Reply to Spartan191
  5. Does the flash disk show up on your boot options? Try to select the booting device manually. Also check if you made your flash disk as a boot drive properly.
    Reply to cinnamon cider
  6. Set it to boot from the flash drive before the HDD, change boot order
    Reply to patrick47018
  7. Ugh, went through hell today. Last night I got it to boot up and was ready to install. The installer prompted me to format my hard drive so I did, then it told me it could not install. My backup was basically erased with my Windows 7 OS, and I didn't have a recovery disc (that I could find, at one point I did.) So I got W7 and then it told me my HDD was gpt partioned. Given up all hope, then I threw in an old hdd from a computer I haven't popped open in 2 years. Worked like a charm, first thing I did was fix my 1TB I would've preferred to have it on. Not going through that again, I'll wait until windows 9 arrives thank you very much.
    Reply to Spartan191
  8. Did you try booting via UEFI? At least my mobo has the options Legacy or UEFI or Both.

    Also, may not apply here but I had trouble with USB devices in Linux. No USB device worked, no keyboard, mouse or anything...until...I enabled IOMMU in BIOS.
    Reply to mamasan2000
  9. mamasan2000 said:
    Did you try booting via UEFI? At least my mobo has the options Legacy or UEFI or Both.

    Also, may not apply here but I had trouble with USB devices in Linux. No USB device worked, no keyboard, mouse or anything...until...I enabled IOMMU in BIOS.


    Yeah, I tried every setting imaginable.
    Reply to Spartan191
  10. Best answer
    In BIOS

    Under Advanced tab

    Legacy USB support - Enabled
    USB ports - Enabled


    Under Boot tab

    USB support - FULL Initialization (the other settings wont detect ALL your USB-devices)

    Also check the "OS Type". It has 2 options, Win UEFI and Other OS. Try switching that too if the above didn't work.
    Reply to mamasan2000
  11. patrick47018 said:
    Set it to boot from the flash drive before the HDD, change boot order


    Thanks that worked for me..!:ange: :) :)
    Reply to cubesptc
  12. mamasan2000 said:
    In BIOS

    Under Advanced tab

    Legacy USB support - Enabled
    USB ports - Enabled


    Under Boot tab

    USB support - FULL Initialization (the other settings wont detect ALL your USB-devices)

    Also check the "OS Type". It has 2 options, Win UEFI and Other OS. Try switching that too if the above didn't work.


    Thank you!!! solved my problem
    Reply to IronStallion
  13. I just wanted to comment that I had a similar problem for the last few days and here is what I had to do to solve it:

    1. I own a DVD copy of Windows 7 Ultimate - create an ISO of the DVD
    2. Use microsofts USB utility to create the USB installer
    3. Use INTELs utility to load the USB 3.0 drivers into the images on the USB installer
    https://downloadcenter.intel.com/download/25476/Windows-7-USB-3-0-Creator-Utility
    Note: this took a while, probably at least 20+ minutes to complete, but it did work.
    4. on the target PC connect the USB installer to any USB 3.0 port and install.


    The problem that I was having was my new MoBo had only 2 legacy USB 2.0 ports, but I had my USB keyboard and mouse connected to USB 3.0 ports. Windows was having trouble detecting them because it could tell they were on ports it didn't have drivers for. I realised this because during the "failing" installs (which we failing with the "driver required" messages) my mouse was moving very lethargically "generically" you might say. However, after installing the USB 3.0 drivers, and user the "fixed" USB installer my mouse was responding rapidly as I would have expected.

    I believe that as a workaround users should TRY and unplug everything from any USB port except a legacy USB 2.0 port. In my case I would have had to remove my keyboard while insalling windows and just use the mouse, and hopefully hot-swap them back and forth. I am not even sure that would work, so good luck if you try that. Otherwise, I suggest you use the linked intel utility to load the USB 3.0 drivers onto you existing Windows 7 USB Installer.


    Hardware:
    Gigabyte GA-Z170X-Gaming 3 ATX LGA1151 Motherboard

    USB Keyboard
    USB Mouse
    USB Thumbdrive loaded with Microsoft Windows 7 Ultimate 64bit
    Reply to theonlyalterego
  14. mamasan2000 said:
    In BIOS

    Under Advanced tab

    Legacy USB support - Enabled
    USB ports - Enabled


    Under Boot tab

    USB support - FULL Initialization (the other settings wont detect ALL your USB-devices)

    Also check the "OS Type". It has 2 options, Win UEFI and Other OS. Try switching that too if the above didn't work.


    I tried all of that, but the USB still doesn't appear in my BIOS. I have used software to verify that it is bootable. Help?
    Reply to gnguralnick
  15. In Bios, go to hard disk and select the 1st hard disk as your USB drive and second hard disk as your computers hard disk. Then go to boot device priority and the USB option will be visible; you may set as the 1st boot device.
    Reply to Ramjisun
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