Recovering The Operating System; Flashing The Bios - Dell Inspiron 14 5410 Service Manual

Table 21. Functions
Purpose
Trigger
Indicator of fault
Repair instruction

Recovering the operating system

When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell
SupportAssist OS Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating
system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating
system. 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.
For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at
www.dell.com/support.

Flashing the BIOS

About this task
You may need to flash (update) the BIOS when an update is available or when you replace the system board.
Follow these steps to flash the BIOS:
Steps
1. Turn on your computer.
2. Go to www.dell.com/support.
3. Click Product support, enter the Service Tag of your computer, and then click Submit.
NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.
4. Click Drivers & downloads > Find it myself.
5. Select the operating system installed on your computer.
6. Scroll down the page and expand BIOS.
7. Click Download to download the latest version of the BIOS for your computer.
8. After the download is complete, navigate to the folder where you saved the BIOS update file.
9. Double-click the BIOS update file icon and follow the instructions on the screen.
M-BIST
Evaluates the health condition of the
system board.
Press the <M> key and the power
button.
Battery LED light with Solid Amber
Indicates a problem with the system
board.
L-BIST
Checks if the system board is supplying
power to the LCD by performing an LCD
Power Rail test.
Integrated into the single LED error
code diagnostics. Automatically initiated
during POST.
Battery LED error code of [2,8] blinks
Amber x2, then pause, then blinks White
x8.
Indicates a problem with the system
board.
Troubleshooting 79