Table 48. Diagnostic light codes(continued)
Diagnostic light codes
(Amber, White)
Problem description Recommended solutions
1,4 Hinge Cable OCP Replace LCM (cable and Panel)
1,5 EC unable to program i-Fuse Replace the system board.
1,6 Generic catch-all for ungraceful EC code flow
errors
Disconnect all power source (AC, coin cell)
and drain flea power by pressing and holding
down the power button.
1,7 Non-RPMC Flash on Boot Guard fused system Flash latest BIOS version. If the problem
persists, replace the system board.
1,8 Chipset “Catastrophic Error” signal has tripped Replace the CPU.
2,1 CPU configuration or CPU failure Replace the CPU.
2,2 System board: BIOS or Read-Only Memory
(ROM) failure
Flash latest BIOS version. If the problem
persists, replace the system board.
2,3 No memory or Random-Access Memory (RAM)
detected
Reseat and swap memory modules among
the slots. If the problem persists, replace the
memory module.
2,4 Memory or Random-Access Memory (RAM)
failure
Reseat and swap memory modules among
the slots. If the problem persists, replace the
memory module.
2,5 Invalid memory installed Reseat and swap memory modules among
the slots. If the problem persists, replace the
memory module.
2,6 System board/Chipset Error Replace the system board.
2,7 LCD failure SBIOS message Replace the display.
3,1 CMOS battery failure Reset the CMOS battery connection. If the
problem persists, replace the RTC battery.
3,2 PCI of Video card/chip failure Replace the system board.
3,3 Recovery image not found Replace the system board.
3,4 Recovery image found but invalid Replace the system board.
3,5 EC power-rail error Replace the system board.
3,6 Flash corruption detected by SBIOS Flash corruption is detected by SBIOS. If the
problem persists, replace the system board.
3,7 Timeout waiting on ME to reply to HECI
message
Replace the system board.
4,1 Memory DIMM power rail failure Replace the system board.
4,2 CPU Power cable connection issue
● Perform the PSU BIST Test, reseat the
cable.
● If this does not work, replace the system
board, power supply or cabling.
4,4 LCD Power Rail Failure Replace motherboard
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 stand-alone tool that is preinstalled in Dell computers running the Windows operating
system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating
146
Troubleshooting
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