Table 10. Diagnostic light codes
Diagnostic light codes
(Amber, White)
Problem description Recommended solutions
1,2 Unrecoverable SPI Flash Failure Replace the system board.
2,1 CPU configuration or CPU failure Run the Intel CPU diagnostics tools. If problem
persists, replace the system board.
2,2 System board: BIOS or Read-Only Memory
(ROM) failure
Flash latest BIOS version. If problem persists, replace
the system board.
2,3 No memory or Random-Access Memory
(RAM) detected
Confirm that the memory module is installed properly.
If problem persists, replace the memory module.
2,4 Memory or Random-Access Memory
(RAM) failure
Reset and swap memory modules among the slots. If
problem persists, replace the memory module.
2,5 Invalid memory installed Reset and swap memory modules among the slots. If
problem persists, replace the memory module.
2,6 System board/Chipset Error/Clock
failure/Gate A20 failure/Super I/O failure/
Keyboard controller failure
Flash latest BIOS version. If problem persists, replace
the system board.
3,1 CMOS battery failure Reset the CMOS battery connection. If problem
persists, replace the RTC battery.
3,2 PCI of Video card/chip failure Replace the system board.
3,3 BIOS Recovery 1: BIOS recovery image not
found
Flash latest BIOS version. If problem persists, replace
the system board.
3,4 BIOS Recovery 2: Recovery image found
but invalid
Flash latest BIOS version. If problem persists, replace
the system board.
3,5 Power Rail Failure: EC ran into power
sequencing failure
EC ran into power sequencing failure. If problem
persists, replace the system board.
3,6 Paid SPI Volume Error Flash corruption detected by SBIOS. If problem
persists, replace the system board.
3,7 Management Engine (ME) error. Timeout
waiting on ME to reply to HECI message.
Timeout waiting on ME to reply to HECI message. If
problem persists, replace the system board.
4,2 CPU Power cable connection issue
● Perform the PSU BIST Test, reseat cable.
● If this does not work, replace the system board,
power supply or cabling.
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 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/serviceabilitytools. Click SupportAssist and then, click SupportAssist OS Recovery.
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Troubleshooting
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