- Notes, cautions, and warnings
- Working on your computer
- Technology and components
- Major components of your system
- Disassembly and reassembly
- MicroSD card
- Base cover
- Battery
- Battery cable
- WWAN card
- WLAN card
- Coin-cell battery
- Memory modules
- DC-in port
- Hard disk drive (HDD)
- Solid-state drive
- Solid state drive bracket
- Inner frame
- SmartCard reader
- Touchpad buttons
- LED board
- Speakers
- Heat sink
- System fan
- System board
- Keyboard assembly
- Keyboard bracket
- Power button
- Display assembly
- Display bezel
- Display panel
- Camera
- Hinge caps
- Display hinges
- Display (eDP) cable
- Display back cover
- Palmrest assembly
- BIOS setup
- Troubleshooting
- Handling swollen rechargeable Li-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System diagnostic lights
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Getting help
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Dell Latitude 5400 Service Manual
Updating the BIOS in Windows
About this task
CAUTION:If BitLocker is not suspended before updating the BIOS, the next time you reboot the computer it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress, and the computer will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system reinstall. For more information about this subject, search in the Knowledge Base Resource at
Dell Support Site.
Steps
- Go to Dell Support Site.
-
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 to automatically identify your computer. You can also use the product ID or manually browse for your computer model.
- Click Drivers & Downloads. Expand Find drivers.
- Select the operating system installed on your computer.
- In the Category drop-down list, select BIOS.
- Select the latest version of BIOS, and click Download to download the BIOS file for your computer.
- After the download is complete, browse the folder where you saved the BIOS update file.
-
Double-click the BIOS update file icon and follow the on-screen instructions.
For more information, search in the Knowledge Base Resource at Dell Support Site.
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