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Table 14. Power LED status
Power LED state
Off
Solid Amber
Blinking Amber
Solid White
For example, the power status light blinks amber two times followed by a pause, and then blinks white three times followed by a
pause. This 2,3 pattern continues until the computer is turned off indicating No memory/RAM detected.
The following table shows different light patterns and what they indicate:
Table 15. System diagnostic lights
Light pattern
1,2
2,1
2,2
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 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
Problem description
Unrecoverable SPI flash failure
CPU failure
System board failure, corrupt BIOS, ROM error
No memory/RAM detected
Memory or RAM failure
Invalid memory installed
System board error, chipset error, clock failure, gate
A20 failure, keyboard controller failure
Display failure
CMOS battery failure
PCIe or video card/chip failure
BIOS recovery image not found
BIOS recovery image found but invalid
Power rail failure
Paid SPI volume error
Intel ME (Management Engine) error
Description
System is in the off state
System fault during pre-POST, but power supply is good (S0)
System fault during pre-POST indicating a bad or missing PSU
rail
System is in BIOS and may be fully functional depending on
the state of the remaining diagnostic LEDs
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