- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw List
- Major components of your system
- Keyboard
- Solid-state drive
- Speakers
- Coin-cell battery
- Audio board
- Battery
- Display assembly
- Power-adapter port
- World-facing camera
- Heat sink
- Dummy battery cell
- System board
- Touch-panel assembly
- Display bezel
- Display panel
- Front facing camera
- Display cable
- Display hinges
- Display back cover
- Base cover assembly
- Drivers and downloads
- System setup
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System-diagnostic lights
- Diagnostic error messages
- System error messages
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Updating the BIOS in Windows
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Latitude 3120/Latitude 3120 2-in-1 Service Manual
Clearing CMOS settings
About this task
CAUTION Clearing CMOS settings will reset the BIOS settings on your computer.
Steps
- Remove the palmrest and keyboard assembly.
- Disconnect the battery cable from the system board.
- Remove the coin-cell battery.
- Wait for one minute.
- Replace the coin-cell battery.
- Connect the battery cable to the system board.
- Replace the palmrest and keyboard assembly.
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