System-Diagnostic Lights; Recovering The Operating System - Dell OptiPlex Small Form Factor Plus 7020 Owner's Manual

System-diagnostic lights

Table 48. Diagnostic LED behavior
Amber
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
4
4

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 all Dell computers that are installed with the 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.
138 Troubleshooting
Blinking pattern
White
1
2
5
6
7
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
1
2
Problem description
TPM Detection Failure
Unrecoverable SPI Flash Failure
EC unable to program i-Fuse
Generic catch-all for ungraceful EC code
flow errors
Non-RPMC Flash on Boot Guard fused
system
CPU failure
System board, BIOS corruption, or ROM
error
No Memory/RAM detected
Memory/RAM failure
Invalid memory installed
System board/ chipset error
LCD failure - SBIOS message
System board - EC detection of LCD
power rail failure
CMOS battery failure
PCI of Video card or chip failure
Recovery Image not found
Recovery image found but not valid
EC ran into power sequencing failure
Flash corruption detected by SBIOS
Timeout waiting on ME to reply to HECI
message
Memory DIMM power rail failure
CPU Power Cable Connection Issue