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  1. Cannot Boot To BIOS Setup (F2) or One-Time Boot Sequence Options …

    Nov 26, 2020 · 1. First off, F2 or F12 does not work. 2. F2 right after the keyboard light comes on. 3. Continuous tapping of the F2 key, will cause the desktop not boot at all. 4. Continuous tapping of the …

  2. How to Flash the BIOS or UEFI with a USB Flash Drive | Dell US

    Sep 1, 2025 · Update your Dell BIOS using a USB drive when Windows won't boot. Quick F12 menu method for emergency BIOS flashing.

  3. F12 Not Working to Get to Boot Menu | DELL Technologies

    Dec 31, 2018 · The F12 key works when booted up to change the volume so I don't think the key itself is broken. I wanted to make the laptop boot from a Macrium Reflect recovery disk to see if the disk was …

  4. Flashing the BIOS from the F12 One-Time Boot Menu - Dell

    Sep 8, 2025 · Updating the BIOS from the One Time Boot Menu Use the following steps to update the BIOS from the F12 One Time Boot menu: WARNING: Dell Technologies recommends disconnecting …

  5. 通过 F12 一次性启动菜单刷新 BIOS | Dell 中国

    通过一次性启动菜单更新 BIOS 使用以下步骤通过 F12 一次性启动菜单更新 BIOS: 警告:Dell Technologies 推荐在戴尔计算机上更新 BIOS 之前断开所有设备的连接,包括外部硬盘驱动器、打印 …

  6. How To Use Multimedia and Function Keys on Dell External Keyboards

    Jul 3, 2025 · Learn how to use multimedia and function keys on Dell external keyboards, including primary and secondary key functions, swapping modes, BIOS access, and Windows shortcuts.

  7. Unable to access bios with eithe F2 or F12 - Dell

    Nov 29, 2023 · Unable to access bios with eithe F2 or F12 . Was attempting to do a clean install of windows 11 on xps8700 using same USB that just used to update a dell inspirion 3520. for some …

  8. F12 Not Working - Even after common fixes | DELL Technologies

    Jun 2, 2020 · The F-lock key is just to the right of the F12 key, so easy to hit by accident. Its purpose is to assign a second line of functions for the function keys i.e. hit F-Lock key once and it disables the …

  9. SOLVED! Boot stops at Dell Logo screen and F2, F12 do not work, …

    Sep 26, 2022 · SOLVED! Boot stops at Dell Logo screen and F2, F12 do not work, during Windows Update SOLVED! Optiplex 9010 was updating Windows 10 (Important!!). When I came back, it was …

  10. F12 Key not working | DELL Technologies

    Aug 31, 2022 · If the function keys are not working, the problem may be you have a function lock or F-Lock key that needs to be toggled. The F-Lock key is used to turn on or off the F keys ( F1 through …