Dell Inspiron 14 5420 Service Manual

Also see for Inspiron 14 5420: Setup and specifications

Updating the BIOSUpdating the BIOS in WindowsSteps1. Go to www.dell.com/support.2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search.NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. Youcan also use the product ID or manually browse for your computer model.3. Click Drivers & Downloads. Expand Find drivers.4. Select the operating system installed on your computer.5. In the Category drop-down list, select BIOS.6. Select the latest version of BIOS, and click Download to download the BIOS file for your computer.7. After the download is complete, browse the folder where you saved the BIOS update file.8. Double-click the BIOS update file icon and follow the on-screen instructions.For more information, see knowledge base article 000124211 at www.dell.com/support.Updating the BIOS using the USB drive in WindowsSteps1. Follow the procedure from step 1 to step 6 in Updating the BIOS in Windows to download the latest BIOS setup program file.2. Create a bootable USB drive. For more information, see the knowledge base article 000145519 at www.dell.com/support.3. Copy the BIOS setup program file to the bootable USB drive.4. Connect the bootable USB drive to the computer that needs the BIOS update.5. Restart the computer and press F12 .6. Select the USB drive from the One Time Boot Menu.7. Type the BIOS setup program filename and press Enter.The BIOS Update Utility appears.8. Follow the on-screen instructions to complete the BIOS update.Updating the BIOS from the F12 One-Time boot menuUpdate your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive and booting from the F12One-Time boot menu.About this taskBIOS UpdateYou can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12One-Time boot menu on the computer.Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then theBIOS supports this BIOS update option.NOTE: Only computers with BIOS Flash Update option in the F12 One-Time boot menu can use this function.Updating from the One-Time boot menuTo update your BIOS from the F12 One-Time boot menu, you need the following:● USB drive formatted to the FAT32 file system (key does not have to be bootable)● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive62 System setup