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Table 37. System-diagnostic lights (continued)
Blinking pattern
Amber
2
2
2
3
3
3
3
3
3
NOTE:
Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Num Lock), Power button LED (without Fingerprint reader), and
Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Preboot System Performance
Check diagnostics.
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.
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.
104
Troubleshooting
White
Problem description
6
System board or Chipset
7
LCD failure (SBIOS message) Replace the display assembly.
8
LCD failure (EC detection of
2
PCI or Video card or chip
3
BIOS Recovery image not
4
BIOS Recovery image found
5
6
Flash corruption is detected
7
Timeout waiting on ME to
reply to HECI message.
Error
power rail failure)
failure
found
but invalid
Power rail failure
by SBIOS.
Suggested resolution
● If the problem persists,
replace the memory
module.
Replace the system board.
Replace the system board.
Replace the system board.
● Flash the latest BIOS
version.
● If the problem persists,
replace the system board.
● Flash the latest BIOS
version.
● If the problem persists,
replace the system board.
Replace the system board.
● Disconnect all the power
source and drain the flea
power by pressing and
holding down the power
button 3~5 seconds to
ensure all the power are
drained.
● If the problem persists,
replace the system board.
Replace the system board.
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