Article Number: 000127912
The Latitude E7470 may encounter an issue where the USB boot device doesn't appear in the boot select mode (F12) screen. This article provides steps to troubleshoot and resolve this issue.
When entering the F12 boot menu on the Latitude E7470, the USB boot device may not show as an option. This can occur whether the computer is set to UEFI or Legacy boot mode in the BIOS, and if the Enable Legacy Option ROMs is chosen under the Advanced Boot Options.
To troubleshoot the issue, first make sure the USB device is recognized in Windows. If the USB device isn't recognized in Windows, then try the device in the different USB ports on the laptop. You can also test whether the USB ports are functioning correctly by running the Dell Enhanced Pre-Boot System Diagnostics (ePSA) on the laptop. Reference the following guide for more information on how to run the ePSA diagnostics: Resolve Hardware Issues Using ePSA or PSA Diagnostics and Guide to Error Codes.
If the USB device is recognized in Windows, then downloading and installing the latest BIOS update for the Latitude E7470 should resolve the issue. Follow the steps below to download the latest BIOS update:
21 Feb 2021