Windows 10: won't boot into Windows 10 when USB flash drive is inserted Solved

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  1.    26 May 2018 #1

    won't boot into Windows 10 when USB flash drive is inserted


    I have a used Thinkpad SL510 purchased on eBay.
    It came with Window 7 Pro.
    It is an older laptop so no UEFI.

    I immediately did a clean installation of Windows 10 Pro 1803 64-bit.
    I managed to find all the drivers for it, and there are no problems in Device Manager.
    Windows 10 is activated.
    The BIOS is the latest version.

    I no longer can use F12 to choose the Boot Menu.
    Before installing Windows 10, I had changed the boot order in BIOS to USB HDD, USB CD ROM, ATAPI CD ROM, HDD.
    What happens now instead is that the laptop will not boot into Windows 10 when a USB hard drive or a USB thumb drive is inserted into any of the 4 USB ports.
    The USB drives contain only data files and are not bootable.

    Can someone explain why this is happening and how do I fix it?
      My ComputerSystem Spec

  2. Bree's Avatar
    Posts : 8,583
    10 Home x64 (1803) (10 Pro on 2nd pc)
       26 May 2018 #2

    atexit8 said: View Post
    ...I no longer can use F12 to choose the Boot Menu.
    Yes, this is the case if you have Fast Start up turned on in Windows 10 (by default it is turned on). This is a form of hibernation, so the boot choice bios screen is skipped on powering up. You may also find that with Fast Start up turned on you don't get the option to enter the bios setup either.

    Either turn off Fast Start up, or use Restart (rather than Shut down). A Restart doesn't use Fast Start up so you will get a chance to enter the bios setup or to use F12 to choose the boot device.

    Before installing Windows 10, I had changed the boot order in BIOS to USB HDD, USB CD ROM, ATAPI CD ROM, HDD.
    What happens now instead is that the laptop will not boot into Windows 10 when a USB hard drive or a USB thumb drive is inserted into any of the 4 USB ports.
    The USB drives contain only data files and are not bootable.

    Can someone explain why this is happening and how do I fix it?
    You set USB as the first boot device in the boot priority. If it finds a USB drive connected it doesn't skip the USB if it's not bootable, it will try to boot from it and will complain that the OS is missing if it is not a bootable USB. Only if all the other boot devices are not connected will it boot from the HDD as you have set that as last in the boot priority.

    Fix it by putting the HDD ahead of the USB drives in the boot priority. You can leave the CD ROM ahead of the HDD if you like, you're less likely to leave a disk in the DVD drive so that shouldn't be a problem.
    Last edited by Bree; 26 May 2018 at 20:11.
      My ComputersSystem Spec

  3.    26 May 2018 #3

    Bree said: View Post
    Yes, this is the case if you have Fast Start up turned on in Windows 10 (by default it is turned on). This is a form of hibernation, so the boot choice bios screen is skipped on powering up. You may also find that with Fast Start up turned on you don't get the option to enter the bios setup either.
    .
    I disabled the Fast Start in Windows 10, but I still don't see the Boot Menu.

    I still can get to BIOS using F1.
      My ComputerSystem Spec

  4.    27 May 2018 #4

    Isn't that F12 a BIOS function to choose a BOOT drive to BOOT from ? It looks to me that USB is chosen to be default BOOT device in BIOS. If that's the case, than BIOS should be set to BOOT from HDD.
      My ComputersSystem Spec

  5. Bree's Avatar
    Posts : 8,583
    10 Home x64 (1803) (10 Pro on 2nd pc)
       27 May 2018 #5

    atexit8 said: View Post
    I disabled the Fast Start in Windows 10, but I still don't see the Boot Menu.

    I still can get to BIOS using F1.
    These are Lenovo's instructions for getting to the bios or boot menu. They don't appear to be any different for F1 or F12. Sometimes you have to be very quick, so try pressing F12 repeatedly starting before you see the Lenovo logo.

    https://support.lenovo.com/gb/en/solutions/ht500222

    But apparently on a Lenovo 510-15 there's a small hidden reset button you can only press with a thin object like a pin or a paperclip. See this Lenovo forum post.

    https://forums.lenovo.com/t5/Lenovo-...5/td-p/3559438
      My ComputersSystem Spec

  6.    27 May 2018 #6

    Bree said: View Post
    These are Lenovo's instructions for getting to the bios or boot menu. They don't appear to be any different for F1 or F12. Sometimes you have to be very quick, so try pressing F12 repeatedly starting before you see the Lenovo logo.

    https://support.lenovo.com/gb/en/solutions/ht500222
    The Lenovo logo never appears.
    I start tapping on F12 as soon as I press the Power button.

    I am able to get into the BIOS setting with F1.
    In the BIOS, F12 is Enabled.


    Bree said: View Post
    But apparently on a Lenovo 510-15 there's a small hidden reset button you can only press with a thin object like a pin or a paperclip. See this Lenovo forum post.

    https://forums.lenovo.com/t5/Lenovo-...5/td-p/3559438
    This laptop has the blue ThinkVantage button. Pressing it does nothing.
    I am going to try to install the Windows 7 version of it in Compatibility mode and see if that will work.
    The SL510 is not mentioned anywhere on their website when it comes to the ThinkVantage firmware.


    .
      My ComputerSystem Spec

  7.    27 May 2018 #7

    Thanks for all the help.
    Still very new to Windows 10.

    I figured out what to do.

    F1 at bootup to get into BIOS
    Make sure F12 setting is enabled in BIOS.
    Save.

    I had changed Boot Mode in BIOS from Quick to Diagnostics.
    Not good.
    When I changed it back to Quick and that gave me back the Thinkpad logo at startup and the ability to use F12 to get to the Boot Menu.

    If I left Boot Mode in BIOS on Diagnostics, quickly tapping F12 a few times at bootup gets me to Windows 10 Boot Manager which gives me F8 to get into Advanced Boot Options. I have the legacy boot menu enabled.


    ,
      My ComputerSystem Spec

  8.    27 May 2018 #8

    Please enlighten me, @Bree. If you go into Settings → Update & Security → Recovery → Advanced Startup, can't you force the PC to boot from alternate media even if Fast Startup is turned on? That's what I do routinely on my PCs when I want to boot into my recovery partition or from an USB flash drive. Am I missing something? Thanks in advance for your upcoming response.
    Best wishes,
    --Ed--
      My ComputersSystem Spec

  9. Bree's Avatar
    Posts : 8,583
    10 Home x64 (1803) (10 Pro on 2nd pc)
       27 May 2018 #9

    EdTittel said: View Post
    Please enlighten me, @Bree. If you go into Settings → Update & Security → Recovery → Advanced Startup, can't you force the PC to boot from alternate media even if Fast Startup is turned on? That's what I do routinely...
    Yes @EdTittel, that's Option One here...
    Boot from USB Drive on Windows 10 PC

    Although, on my PCs I only have four of the five option shown in Brink's screenshot - I'm missing the 'Use a device' one. That may well be because it's a UEFI-only option. Mine are Legacy bios systems, as is the OP's system...

    atexit8 said: View Post
    ... used Thinkpad SL510... It is an older laptop so no UEFI.
    But even if they could boot from USB that way, it would have been a workaround, not the fix. The OP's problem (now solved) was that their bios was set up in such a way that it bypassed offering the chance to use F12 for a boot choice menu.
      My ComputersSystem Spec

  10.    27 May 2018 #10

    @Bree: thanks for the explanation. I knew there had to be a good reason. As I mentioned last week in the context of a different boot/system drive scenario, I'm now in the situation where I have only UEFI systems, so I don't always stop to consider things from the traditional BIOS perspective. I didn't realize that was involved here, too, but it makes sense.
    Thanks again,
    --Ed--
      My ComputersSystem Spec


 
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