Transporting sensitive components..........................8 After working inside your computer..........................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list..................................... 10 Major components of Inspiron 14 5409......................... 11 Base cover................................... 13 Removing the base cover............................13 Installing the base cover.............................15 Battery....................................17 Lithium-ion battery precautions..........................17...
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Updating the BIOS in Windows .............................76 Updating BIOS on systems with BitLocker enabled....................76 Updating your system BIOS using a USB flash drive..................76 Updating the Dell BIOS in Linux and Ubuntu environments..................77 Flashing the BIOS from the F12 One-Time boot menu.................... 77 System and setup password............................80 Assigning a system setup password........................
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Clearing BIOS (System Setup) and System passwords..................81 Chapter 5: Troubleshooting......................83 Locate the Service Tag or Express Service Code of your Dell computer ..........83 SupportAssist diagnostics............................... 83 Built-in self-test (BIST)..............................83 System board built-in self-test (M-BIST)......................84 Display panel power rail built-in self-test (L-BIST)..................... 84 Display panel built-in self-test (LCD-BIST)......................85...
You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.
ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.
After working inside your computer About this task CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. Steps 1. Replace all screws and ensure that no stray screws remain inside your computer. 2. Connect any external devices, peripherals, or cables you removed before working on your computer. 3.
Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools The procedures in this document may require the following tools: ● Phillips screwdriver #1 ● Phillips screwdriver #0 ●...
System board Palm-rest and keyboard M2 x 3 assembly System board Palm-rest and keyboard M2 x 2 assembly Major components of Inspiron 14 5409 The following image shows the major components of Inspiron 14 5409. Removing and installing components...
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1. Base cover 2. Battery 3. Power-adapter port 4. Heat sink 5. Memory module 6. Speakers 7. System board 8. Touchpad 9. Display assembly 10. Palm-rest and keyboard assembly 11. Power button with fingerprint reader 12. Coin-cell battery 13. I/O board 14.
Base cover Removing the base cover Prerequisites 1. Follow the procedure in Before working inside your computer. About this task The following images indicate the location of the base cover and provide a visual representation of the removal procedure. Removing and installing components...
Steps 1. Remove the five screws (M2x4) that secure the base cover to the palm-rest and keyboard assembly. 2. Loosen the two captive screws (M2x7.5) that secure the base cover to the palm-rest and keyboard assembly. 3. Using a plastic scribe, pry the base cover beside the display hinges, and then continue to work on the sides to open the base cover.
Steps 1. Connect the battery cable to the system board, if applicable. 2. Place the base cover on top of the palm-rest and keyboard assembly. 3. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and then snap the base cover into place.
● If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.
Installing the 3-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the battery and provides a visual representation of the installation procedure. Steps 1.
About this task The following images indicate the location of the battery and provide a visual representation of the removal procedure. Steps 1. Peel the tape and disconnect the battery cable, if applicable. 2. Remove the five screws (M2x3) that secure the battery to the palm-rest and keyboard assembly. 3.
Steps 1. Place the battery on the palm-rest and keyboard assembly. 2. Align the screw holes on the battery with the screw holes on the palm-rest and keyboard assembly. 3. Replace the five screws (M2x3) that secure the battery to the palm-rest and keyboard assembly. 4.
Steps 1. Lift the mylar to uncover the memory module. 2. Use your fingertips to carefully spread apart the securing-clips on each end of the memory-module slot until the memory module pops-up. 3. Remove the memory module from the memory-module slot. Installing the memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
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Steps 1. Lift the mylar to find the memory-module slot. 2. Align the notch on the memory module with the tab on the memory-module slot. 3. Slide the memory module firmly into the slot at an angle. 4. Press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it.
Solid-state drive—M.2 slot one Removing the M.2 2230 solid-state drive from M.2 slot one Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task NOTE: This procedure applies only to computers shipped with an M.2 2230 solid-state drive installed in M.2 slot one. NOTE: Depending on the configuration ordered, your computer may support an M.2 2230 solid-state drive or an M.2 2280 solid-state drive in M.2 slot one.
If there is only one solid-state drive in the configuration you ordered, you can install another solid-state drive in the other M.2 slot. However, you may need a solid-state drive bracket (sold separately; please contact Dell support) to install the additional solid-state drive.
If there is only one solid-state drive in the configuration you ordered, you can install another solid-state drive in the other M.2 slot. However, you may need a solid-state drive bracket (sold separately; please contact Dell support) to install the additional solid-state drive.
If there is only one solid-state drive in the configuration you ordered, you can install another solid-state drive in the other M.2 slot. However, you may need a solid-state drive bracket (sold separately; please contact Dell support) to install the additional solid-state drive.
Steps 1. Slide and remove the solid-state drive bracket from the support bracket slot. 2. Depending on the type of solid-state drive (M.2 2230/M.2 2280), align and insert the SSD bracket into the bracket slot. 3. Install the solid-state drive. Solid-state drive—M.2 slot two Removing the M.2 2230 solid-state drive from M.2 slot two Prerequisites...
Steps 1. Remove the screw (M2x3) that secures the solid-state drive bracket to the palm-rest and keyboard assembly. 2. Slide and lift the solid-state drive bracket off the solid-state drive. 3. Remove the screw (M2x3) that secures the solid-state drive to the palm-rest and keyboard assembly. 4.
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NOTE: Before installing your M.2 2230 solid-state drive, ensure that the mounting bracket is in the correct location. For more information, see Replacing the solid-state drive mounting bracket. NOTE: If there is only one solid-state drive in the configuration you ordered, you can install another solid-state drive in the other M.2 slot.
Removing the M.2 2280 solid-state drive/Intel Optane storage from M.2 slot two Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task NOTE: If you have ordered a 3-cell (40 Wh) battery configuration, your computer can only support one solid-state drive in M.2 slot one.
Steps 1. Remove the screw (M2x3) that secures the solid-state drive bracket to the palm-rest and keyboard assembly. 2. Slide and lift the solid-state drive bracket off the solid-state drive/Intel Optane storage. 3. Remove the screw (M2x3) that secures the solid-state drive/Intel Optane storage to the palm-rest and keyboard assembly. 4.
Steps 1. Align the notches on the solid-state drive/Intel Optane storage with the M.2 slot two on the system board. 2. Slide the solid-state drive/Intel Optane storage into the M.2 slot two on the system board. 3. Replace the screw (M2x3) that secures the solid-state drive/Intel Optane storage to the palm-rest and keyboard assembly. 4.
If there is only one solid-state drive in the configuration you ordered, you can install another solid-state drive in the other M.2 slot. However, you may need a solid-state drive bracket (sold separately; please contact Dell support) to install the additional solid-state drive.
Steps 1. Remove the screw (M2x3) that secures the WLAN card to the system board. 2. Remove the bracket that secures the WLAN card to the system board. 3. Disconnect the antenna cables from the WLAN card. 4. Slide and remove the WLAN card from the WLAN-card slot. Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
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Steps 1. Connect the antenna cables to the WLAN card. The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer. Table 2. Antenna-cable color scheme Connectors on the Antenna-cable color Silkscreen marking wireless card △...
Removing the fan Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The following images indicate the location of the system fan and provide a visual representation of the removal procedure. Steps 1.
Installing the fan Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the system fan and provides a visual representation of the installation procedure. Steps 1.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer. Coin-cell battery Removing the coin-cell battery Prerequisites NOTE: Removing the coin-cell battery resets the BIOS setup program's settings to default. It is recommended that you note the BIOS setup program's settings before removing the coin-cell battery.
About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure. Steps 1. Adhere the coin-cell battery in the coin-cell battery slot on the palm-rest and keyboard assembly. 2. Route the coin-cell battery cable through the routing guides on the palm-rest and keyboard assembly. 3.
Steps 1. Remove the two screws (M2.5x5) that secure the right display-hinge to the system board. 2. Disconnect the power-adapter port cable from the system board. 3. Remove the screw (M2x3) that secures the power-adapter port to the palm-rest and keyboard assembly. 4.
Steps 1. Place the power-adapter port into the slot on the palm rest and keyboard assembly. 2. Replace the screw (M2x3) that secures the power-adapter port on the palm-rest and keyboard assembly. 3. Route the power-adapter port cable through the routing guides on the palm-rest and keyboard assembly. 4.
Steps 1. Peel the tape that secures the display cable to the system board. 2. Open the latch, and then disconnect the display cable from the system board. 3. Remove the display cable from the routing guides on the palm-rest and keyboard assembly. 4.
Steps 1. Place the display assembly on a clean and flat surface with the display panel facing up. 2. Slide the palm-rest and keyboard assembly under the display hinges. 3. Press down the display hinges and align the screw holes on the display hinges with the screw holes on the palm-rest and keyboard assembly.
2. Open the latch and disconnect the power-button cable (or fingerprint-reader cable, if applicable) from the I/O board. 3. Open the latch and disconnect the I/O-board cable from the I/O board. 4. Disconnect the coin-cell battery cable from the I/O board. 5.
Touchpad Removing the touchpad Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery (3-cell or 4-cell). About this task The following images indicate the location of the touchpad and provide a visual representation of the removal procedure. Steps 1.
5. Remove the two screws (M2x2) that secure the touchpad to the palm-rest and keyboard assembly. 6. Lift the touchpad off the palm-rest and keyboard assembly. Installing the touchpad Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the touchpad and provides a visual representation of the installation procedure.
Next steps 1. Install the battery (3-cell or 4-cell). 2. Install the base cover. 3. Follow the procedure in After working inside your computer. Speakers Removing the speakers (in 3-cell battery configuration) Prerequisites 1. Follow the procedure in Before working inside your computer.
Steps 1. Disconnect the speaker cable from the system board. 2. Disconnect the keyboard-backlight cable and the keyboard cable from the system board. 3. Note the routing of the speaker cable, and remove the speaker cable from the routing guides on the palm-rest and keyboard assembly.
Steps 1. Using the alignment posts and rubber grommets, place the speakers in the slots on the palm-rest and keyboard assembly. NOTE: If the rubber grommets are pushed out of the speakers when removing the speakers, push them back in place before replacing the speakers.
Steps 1. Disconnect the speaker cable from the system board. 2. Disconnect the keyboard-backlight cable and the keyboard cable from the system board. 3. Note the routing of the speaker cable, and remove the speaker cable from the routing guides on the palm-rest and keyboard assembly.
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Steps 1. Using the alignment posts and rubber grommets, place the speakers in the slots on the palm-rest and keyboard assembly. NOTE: If the rubber grommets are pushed out of the speakers when removing the speakers, push them back in place before replacing the speakers.
Heat sink Removing the heat sink (for integrated GPU) Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.
About this task CAUTION: Incorrect alignment of the heat sink can damage the system board and processor. NOTE: If either the system board or the heat sink is replaced, use the thermal pad or thermal paste provided in the kit to ensure that the thermal conductivity is achieved.
Steps 1. In the reverse order (7>6>5>4>3>2>1), loosen the seven captive screws (M2x5.85) that secure the heat sink to the system board. NOTE: The number of screws varies depending on the configuration ordered. 2. Lift the heat sink off the system board. Installing the heat sink (for discrete GPU) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Place the heat sink on the system board and align the screw holes on the heat sink with the screw holes on the system board. 2. In sequential order (1>2>3>4>5>6>7), tighten the seven captive screws (M2x5.85) that secure the heat sink to the system board.
Steps 1. Remove the screw (M2x2) that secures the power-button bracket to the palm-rest and keyboard assembly. 2. Lift the power-button bracket off the palm-rest and keyboard assembly. 3. Remove the two screws (M2x2.5) that secure the power button to the palm-rest and keyboard assembly. 4.
Steps 1. Align and place the power button on the palm-rest and keyboard assembly. 2. Place the fingerprint-reader board (if applicable) on the palm-rest and keyboard assembly. 3. Replace the two screws (M2x2.5) that secure the power button with fingerprint reader to the palm-rest and keyboard assembly.
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About this task The following images indicate the location of the system board and provide a visual representation of the removal procedure. Steps 1. Remove the two screws (M2.5x5) that secure the right display hinge to the system board. 2. Peel the transparent tape, open the latch, and disconnect the display cable. Removing and installing components...
3. Disconnect the power-adapter port cable from the system board. 4. Peel and lift the mylar that covers the I/O-board cable. 5. Disconnect the fan cable. 6. Open the latch and disconnect the I/O-board cable. 7. Peel the tape that covers the USB Type-C port bracket. 8.
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Steps 1. Place the system board on the palm-rest and keyboard assembly. 2. Replace the screw (M2x2) that secures the system board to the palm-rest and keyboard assembly. 3. Replace the screw (M2x3) that secures the system board to the palm-rest and keyboard assembly. 4.
6. Install the WLAN card. 7. Install the memory module. 8. Install the base cover. 9. Follow the procedure in After working inside your computer. Palm-rest and keyboard assembly Removing the palm-rest and keyboard assembly Prerequisites 1. Follow the procedure in Before working inside your computer.
Installing the palm-rest and keyboard assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task Place the palm-rest and keyboard assembly on a flat surface. Next steps 1. Install the speakers. 2.
Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ SLN128938. Drivers and downloads...
System setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.
One time boot menu To enter one time boot menu, turn on your computer, and then press F2 immediately. NOTE: It is recommended to shutdown the computer if it is on. The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: ●...
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Table 4. System setup options—System information menu (continued) Overview Processor L3 Cache Displays the processor L3 Cache size. Current Clock Speed Displays the current processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed. Microcode Version Displays the microcode version. Intel Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable.
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Table 6. System setup options—System Configuration menu System Configuration Date/Time Date Sets the computer date in MM/DD/YYYY format. Changes to the date take effect immediately. Time Sets the computer time in HH/MM/SS 24-hour format. You can switch between 12-hour and 24-hour clock. Changes to the time take effect immediately.
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Table 6. System setup options—System Configuration menu (continued) System Configuration Default: ON. Table 7. System setup options—Video menu Video LCD Brightness Brightness on battery power Sets the screen brightness when the computer is running on battery power. Brightness on AC power Sets the screen brightness when the computer is running on AC power.
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Table 8. System setup options—Security menu (continued) Security NOTE: This feature may cause compatibility issues or loss of functionality with some legacy tools and applications. Enable Strong Passwords Enables or disables strong passwords. Default: OFF. Password Configuration Control the minimum and maximum number of characters that are allowed for Admin and System passwords.
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Table 11. System setup options—Performance menu (continued) Performance Default: ON. Multi-Core Support Changes the number of CPU cores available to the operating system. The default value is set to the maximum number of cores. Default: All Cores. Enable C-State Control Enables or disables the CPU's ability to enter and exit low-power states.
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Table 13. System setup options—Wireless menu (continued) Wireless WLAN Default: ON. Bluetooth Default: ON. Wireless Device Enable Enable or disable internal WLAN/Bluetooth devices. WLAN Default: ON. Bluetooth Default: ON. Table 14. System setup options—POST Behavior menu POST Behavior Numlock Enable Enables or disables Numlock when the computer boots.
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Dell Auto operating system Recovery Controls the automatic boot flow for SupportAssist System Resolution Console Threshold and for Dell operating system Recovery tool. Default: 2. SupportAssist operating system Recovery Enables or disables the boot flow for SupportAssist operating system Recovery tool in the even of certain system errors.
If BitLocker is enabled, it must be suspended before updating the system BIOS, and then re-enabled after the BIOS update is completed. Steps 1. Restart the computer. 2. Go to www.dell.com/support. ● Enter the Service Tag or Express Service Code and click Search. ● Click Drivers & Downloads. ● Click Detect Drivers and follow the on-screen instructions.
One-Time boot menu on the system. Most Dell systems built after 2012 have this capability and you can confirm by booting your system to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your system. If the option is listed, then the BIOS supports this BIOS update option.
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● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB key ● AC power adapter connected to the system ● Functional system battery to flash the BIOS Perform the following steps to execute the BIOS update flash process from the F12 menu: CAUTION: Do not power off the system during the BIOS update process.
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5. Once the file is selected, Double click the flash target file, then press submit. 6. Click the Update BIOS then system will reboot to flash the BIOS. System setup...
7. Once complete, the system will reboot and the BIOS update process is completed. System and setup password Table 19. System and setup password Password type Description System password Password that you must enter to log in to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer.
3. Wait for one minute. 4. Replace the coin-cell battery. 5. Replace the base cover. Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. System setup...
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NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application. System setup...
Locate the Service Tag or Express Service Code of your Dell computer Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your Dell computer, we recommend entering the Service Tag or Express Service Code at www.dell.com/support.
Table 20. Functions (continued) M-BIST L-BIST Trigger Press the <M> key and the power Integrated into the single LED error button. code diagnostics. Automatically initiated during POST. Indicator of fault Battery LED light with Solid Amber Battery LED error code of [2,8] blinks Amber x2, then pause, then blinks White Repair instruction Indicates a problem with the system...
Display panel built-in self-test (LCD-BIST) About this task Steps 1. Press and hold the D key and then press the power button. 2. Release both the D key and the power button when the computer begins POST. 3. The display panel begins to display a solid color, or cycling through different colors. NOTE: The sequence of colors may very due to different display panel vendor.
It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.
NOTE: For more information about performing a hard reset, see the knowledge base article SLN85632 www.dell.com/support. WiFi power cycle About this task If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed.
Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 23. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell Tips...