Recovering The Operating System; Flashing The Bios - Dell G15 5510 Service Manual

Table 20. Diagnostic-light LED codes (continued)
Diagnostic light codes
(Amber,White)
2,3
2,4
2,5
2,6
2,7
3,1
3,2
3,3
3,4
3,5
3,6
3,7

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.
72 Troubleshooting
Problem description
No memory or RAM (Random-Access
Memory) detected
Memory or RAM (Random-Access
Memory) failure
Invalid memory installed
System-board or chipset error
Display failure - SBIOS message
Coin-cell battery failure
PCI, video card/chip failure
Recovery image not found
Recovery image found but invalid
Power-rail failure
System BIOS Flash incomplete
Management Engine (ME) error
Recommended solutions
Confirm that the memory module is installed properly.
If problem persists, replace the memory module.
Reset and swap memory modules among the slots. If
problem persists, replace the memory module.
Reset and swap memory modules among the slots. If
problem persists, replace the memory module.
Flash latest BIOS version. If problem persists, replace
the system board.
Flash latest BIOS version. If problem persists, replace
the system board.
Reset the CMOS battery connection. If problem
persists, replace the RTC battery.
Replace the system board.
Flash latest BIOS version. If problem persists, replace
the system board.
Flash latest BIOS version. If problem persists, replace
the system board.
EC ran into power sequencing failure. If problem
persists, replace the system board.
Flash corruption detected by SBIOS. If problem
persists, replace the system board.
Timeout waiting on ME to reply to HECI message. If
problem persists, replace the system board.