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My issues with UEFI and Fn Keys in Post

  1. #1

    My issues with UEFI and Fn Keys in Post


    Quote Originally Posted by my2cents View Post
    Hi mag3,

    How about deleting your add-on post here because we now have two individuals, reporting the same problem, and neither one of you has provided your specs, which is probably the most important information when trying to help one resolve such issues. Please start your own thread with specs provided and I'm sure you'll get the help you need.
    OK... New thread started. What "specs" do you need?

    The Laptop: Asus Model K55A
    OS: Win8 64bit
    CPU Corei5
    RAM 4GB
    Secure Boot Control Disabled
    Secure Boot State Disabled
    Secure Mode State User
    UEFI/BIOS Ver. American Megatrends Ver. 407

    Issue 1: Function Keys do not work during POST. No matter what Fn keys I push and when (i.e. to try and enter UEFI/BIOS screen, or alternate boot options or whatever), none seem to work. It always goes right into Win8 and to the W8 login screen.

    Issue 2: Need to figure out how to add additional boot devices to UEFI settings, (eg. CD_ROM). Specifically, what EFI string to use for the CD_ROM. I go to "Add New Boot Device" It asks me to "Add Boot Option" (e.g. "CD_ROM" name). It then asks me to "Select Filesystem" from a list that has only 1 option, and looks like it's referring to a PCI type entry and not the CD-ROM. Finally, it asks for the "Path for Boot Option" and I have no idea what to enter for that. Nor does it offer any suggestions.

      My System SpecsSystem Spec

  2. #2


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    "Issue 1: Function Keys do not work during POST. No matter what Fn keys I push and when (i.e. to try and enter UEFI/BIOS screen, or alternate boot options or whatever), none seem to work. It always goes right into Windows 8 and to the Windows 8 login screen. "

    Try pressing the Delete key to get into BIOS at start up.
      My System SpecsSystem Spec

  3. #3


    Quote Originally Posted by David Bailey View Post
    "Issue 1: Function Keys do not work during POST. No matter what Fn keys I push and when (i.e. to try and enter UEFI/BIOS screen, or alternate boot options or whatever), none seem to work. It always goes right into Windows 8 and to the Windows 8 login screen. "

    Try pressing the Delete key to get into BIOS at start up.
    Tried, that. Doesn't work... Neither does Esc, F8, F2, or anything. No matter what I try, it always boots into Win8. I can only get to the UEFI screen by going to: Charms-->Settings-->PC-Settings-->General-->Advanced Startup, etc.
      My System SpecsSystem Spec

  4. #4


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    Someone will come along with other suggestions.

    Sorry mine didn't help.
      My System SpecsSystem Spec

  5. #5


    Quote Originally Posted by David Bailey View Post
    Someone will come along with other suggestions.

    Sorry mine didn't help.
    I had read somewhere that there may be a special "Function Key" driver that must be installed to get them to work, during POST, but I'm not sure. I'll have to check with ASUS on that.
      My System SpecsSystem Spec

  6. #6


    Posts : 2,191
    Windows 8.1


    This came directly from you users manual as David suggested:

    press DEL to enter BIOS setup page when ASUS white logo appears during system Boot-up procedure.
    If that doesn't work then you'll probably need to contact their support group and ask why.
      My System SpecsSystem Spec

  7. #7


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    Quote Originally Posted by mag3 View Post
    Quote Originally Posted by David Bailey View Post
    Someone will come along with other suggestions.

    Sorry mine didn't help.
    I had read somewhere that there may be a special "Function Key" driver that must be installed to get them to work, during POST, but I'm not sure. I'll have to check with ASUS on that.

    Good luck.
      My System SpecsSystem Spec

  8. #8


    Quote Originally Posted by my2cents View Post
    This came directly from you users manual as David suggested:
    Yes, I saw that. But it still doesn't work.
    I'll have to contact them.
      My System SpecsSystem Spec

  9. #9


    Posts : 1,121
    Windows 8.1 x64


    On some systems, using Shift+ some F key might help. On my Asus motherboard, using F5 during the splash screen might get you to the recovery options, or F8 just when the screen finishes, but it is hard.

    Windows 8 has a fast boot option you could turn off to try. There may be a Rapid Boot option in the bios. But Windows 8 uses an option in the BCD Store of "Bootmenupolicy". I don't know if you would want to change it, but having it set to Standard is supposed to bypass the F8 options. Legacy is an option instead of Standard which should allow access to F8. But Windows 8 is designed to boot faster and does give you options to get back to the bios the way you found.

    As far as the CD boot options, I do not know how you would set any boot options in the UEFI bios. Normally the bios reads any available boot options during boot. If a UEFI bootable media is in the drive, it should show as such.
      My System SpecsSystem Spec

  10. #10


    Quote Originally Posted by Saltgrass View Post
    On some systems, using Shift+ some F key might help. On my Asus motherboard, using F5 during the splash screen might get you to the recovery options, or F8 just when the screen finishes, but it is hard.
    I'll try Shift+Fn key. I have two "delete" keys... One is on the top row with the other Fn keys, and "delete" seems to be the primary key press (there is also a Fn+key option). In the lower right, near the numeric pad. there is a "." key with a "delete" option (I believe Fn+key choice). Not sure if either delete key will invoke what it's supposed to during POST. But, definitely, just pressing the affected Fn Key (or Esc., or "delete") by itself doesn't seem to work.

    Quote Originally Posted by Saltgrass View Post
    Windows 8 has a fast boot option you could turn off to try. There may be a Rapid Boot option in the bios. But Windows 8 uses an option in the BCD Store of "Bootmenupolicy". I don't know if you would want to change it, but having it set to Standard is supposed to bypass the F8 options. Legacy is an option instead of Standard which should allow access to F8. But Windows 8 is designed to boot faster and does give you options to get back to the bios the way you found.
    Sorry... I had already disabled rapid boot in the BIOS. Still not working. I did not know of the Win8 option. I will look into that.

    Quote Originally Posted by Saltgrass View Post
    As far as the CD boot options, I do not know how you would set any boot options in the UEFI bios. Normally the bios reads any available boot options during boot. If a UEFI bootable media is in the drive, it should show as such.
    There is an entire menu on how to "Add a boot device." It asks for maybe 2-3 items, but the problem is I don't know what values to put in the fields it's requesting. It asks for the folllowing
    1) Add A Device Name
    2) Select Filesystem
    3) Path for Boot Device

    I don't see what values to add for these things. The only boot device available at present is the Windows Boot Manager, which only points to the Hard Drive. I can't boot off the CD-ROM or any USB devices.
      My System SpecsSystem Spec

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My issues with UEFI and Fn Keys in Post
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