Acer Aspire M5-518t - UEFI issues

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  1. Posts : 11,408
    ME/XP/Vista/Win7
       #11

    Download a new ISO from here:
    Dell Community
      My Computer


  2. Posts : 161
    Windows 7 Home x64
    Thread Starter
       #12

    theog said:
    Download a new ISO from here:
    Dell Community
    My iso is labled X17-59186
      My Computer


  3. Posts : 11,408
    ME/XP/Vista/Win7
       #13

    If the ISO was good DVD/USB would boot uEFI.

    Acer Aspire M5-518t - UEFI issues-uefi_usb_boot_menu.jpg

    Acer Aspire M5-518t - UEFI issues-windows-8-downgrade-006-sb.png
      My Computer


  4. Posts : 161
    Windows 7 Home x64
    Thread Starter
       #14

    UEFI BIOS - Secure Boot enabled

    Security / Select an UEFI file as trusted for executing /

    files that can be selected are as follows
    USB 1/bootmgr.efi
    USB 1/efi/microsoft/boot/cdboot.efi
    USB 1/efi/microsoft/boot/cdboot_noprompt.efi
    USB 1/boot/memtest.efi

    What I don't understand is, what happens when I select these files? I highlight them, hit enter and a prompt asks me if I want to add them to the database. I say Yes, and now I have two extra devices in the my boot order.

    EFI File Boot 1
    EFI File Boot 0

    What are these file/devices?
      My Computer


  5. Posts : 161
    Windows 7 Home x64
    Thread Starter
       #15

    theog said:
    If the ISO was good DVD/USB would boot uEFI.
    I'm DLing it again - tried fresh ISO - no go

    Note - tried a Linux Mint 14 live USB and it worked under UEFI.

    The process works, just not with this particular Windows ISO? I guess I could try making an install via my older Win 7 media...
    Last edited by loaba; 20 Dec 2012 at 18:00.
      My Computer


  6. Posts : 161
    Windows 7 Home x64
    Thread Starter
       #16

    Update: finally got the USB stick to boot, however the install process still hangs on "starting windows" screen. Doesn't matter if secure boot is enabled or disabled.

    I have updated BIOS and it is still no-go.

    What gives?
      My Computer


  7. Posts : 11,408
    ME/XP/Vista/Win7
       #17

    UEFI Bootable USB Flash Drive - Create in Windows

    Are you booting the DVD/USB drive in uEFI mode.

    Acer Aspire M5-518t - UEFI issues-windows-8-downgrade-006-sb-posting.png
      My Computer

  8.    #18

    loaba said:
    Greg - thanks for the link

    As for bypassing UEFI - I can (and have) installed Win 7 normally using the Legacy BIOS. The system works fine, with the exception of the SSD and Intel RST.
    Then I'd install in Legacy to avoid the problems with UEFI.

    You'll likely be able to get past the installer stall by following the steps and running the commands in Bypass UEFI to Install WIn7
      My Computer


  9. Posts : 161
    Windows 7 Home x64
    Thread Starter
       #19

    theog said:
    UEFI Bootable USB Flash Drive - Create in Windows

    Are you booting the DVD/USB drive in uEFI mode.

    Acer Aspire M5-518t - UEFI issues-windows-8-downgrade-006-sb-posting.png
    Yes

    More info - I downloaded the Win 7 pro ISO again. When through the process of making the boot USB stick again. Now the the UEFI system reliably sees the USB drive and starts the Windows install process, but it still hangs on the "starting windows" screen.

    Legacy BIOS allows for easy installation of Win 7, no issues whatsoever.

    So should I just say screw UEFI?
      My Computer

  10.    #20

    This is becoming more of a problem. The fastest way I've seen to get around it without lengthy troubleshooting is to Bypass UEFI to Install WIn7
      My Computer


 
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