- Notes, cautions, and warnings
- Views of Latitude 5440
- Set up your Latitude 5440
- Specifications of Latitude 5440
- Dimensions and weight
- Processor
- Chipset
- Operating system
- Memory
- External ports
- Internal slots
- Ethernet
- Wireless module
- WWAN module
- Audio
- Storage
- Keyboard
- Keyboard function keys
- Camera
- Touchpad
- Power adapter
- Battery
- Display
- Fingerprint reader (optional)
- Sensor
- GPU—Integrated
- GPU—Discrete
- External display support
- Hardware security
- Smart-card reader
- Operating and storage environment
- Dell support policy
- ComfortView Plus
- Using the privacy shutter
- Dell Optimizer
- Working inside your computer
- Removing and installing Customer Replaceable Units (CRUs)
- Removing and installing Field Replaceable Units (FRUs)
- Battery
- Coin-cell battery
- Heat sink
- Removing the heat sink - for computers shipped with integrated graphics card
- Installing the heat sink - for computers shipped with integrated graphics card
- Removing the heat sink - for computers shipped with discrete graphics card
- Installing the heat sink - for computers shipped with discrete graphics card
- Speakers
- Assembly-inner frame
- Display assembly
- Display bezel
- Display panel
- Camera module
- Display hinges
- Display cable
- Display back cover
- System board
- Smart card reader
- Power-button board
- Keyboard
- Palm-rest assembly
- Dummy SIM-card slot filler
- Software
- BIOS Setup
- Troubleshooting
- Handling swollen rechargeable Li-ion batteries
- Locate the Service Tag or Express Service Code of your Dell computer
- 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
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
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Moje konto
- Zadávajte objednávky rýchlo a jednoducho
- Pozrite si svoje objednávky a sledujte priebeh doručenia
- Vytvorte si zoznam svojich produktov a majte ho vždy poruke
- Spravujte svoje lokality Dell EMC, produkty a kontaktné informácie na úrovni produktov pomocou Správy informácií o spoločnosti.
Latitude 5440 Owner's Manual
Drain residual flea power (perform hard reset)
About this task
Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is removed.
For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea power before removing or replacing any components in your computer.
Draining residual flea power, also known as a performing a "hard reset," is also a common troubleshooting step if your computer does not turn on or boot into the operating system.
Perform the following steps to drain the residual flea power:
Steps
- Turn off your computer.
- Disconnect the power adapter from your computer.
- Remove the base cover.
-
Remove the battery.
CAUTION:The battery is a Field Replaceable Unit (FRU) and the removal/installation is intended for authorized service technicians only.
- Press and hold the power button for 20 seconds to drain the flea power.
- Install the battery.
- Install the base cover.
- Connect the power adapter to your computer.
-
Turn on your computer.
NOTE:For more information about performing a hard reset, search in the Knowledge Base Resource at Dell Support Site.
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