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Manuals
Inspiron 14 7420 2-in-1 Service Manual
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Notes, cautions, and warnings
Working inside your computer
Before working inside your computer
Safety instructions
Electrostatic discharge—ESD protection
ESD field service kit
Transporting sensitive components
After working inside your computer
Removing and installing components
Recommended tools
Screw list
Major components of Inspiron 7420 2-in-1
Base cover
Removing the base cover
Installing the base cover
Battery
Lithium-ion battery precautions
Removing the 3-cell battery (41 Wh)
Installing the 3-cell battery (41 Wh)
Removing the 4-cell battery (54 Wh)
Installing the 4-cell battery (54 Wh)
Coin-cell battery
Removing the coin-cell battery
Installing the coin-cell battery
Memory
Removing the memory
Installing the memory
Wireless card
Removing the wireless card
Installing the wireless card
Solid-state drive
Removing the M.2 2230 solid-state drive
Installing the M.2 2230 solid-state drive
Removing the M.2 2280 solid-state drive
Installing the M.2 2280 solid-state drive
Speakers
Removing the speakers
Installing the speakers
Heat sink
Removing the heat sink without discrete graphics
Installing the heat sink without discrete graphics
Removing the heat sink with discrete graphics
Installing the heat sink with discrete graphics
Display assembly
Removing the display assembly
Installing the display assembly
Fan
Removing the fan
Installing the fan
I/O board
Removing the I/O board
Installing the I/O board
Power-button
Removing the power-button
Installing the power-button
Removing the power-button with fingerprint reader
Installing the power-button with fingerprint reader
System board
Removing the system board
Installing the system board
Palm-rest and keyboard assembly
Removing the palm-rest and keyboard assembly
Installing the palm-rest and keyboard assembly
Drivers and downloads
System setup
Entering BIOS setup program
Navigation keys
Boot Sequence
System setup options
System and setup password
Assigning a system setup password
Deleting or changing an existing system setup password
Clearing BIOS (System Setup) and System passwords
Updating the BIOS
Updating the BIOS in Windows
Updating the BIOS using the USB drive in Windows
Updating the BIOS from the F12 One-Time boot menu
Troubleshooting
Handling swollen Lithium-ion batteries
Locate the Service Tag or Express Service Code of your Dell computer
System diagnostic lights
SupportAssist diagnostics
Built-in self-test (BIST)
Recovering the operating system
WiFi power cycle
Backup media and recovery options
Getting help and contacting Dell
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