Table 53. System-diagnostic lights(continued)
Blinking pattern
Problem description Suggested resolutionAmber White
3 3 BIOS Recovery image not
found
● Flash latest BIOS version
● If the problem persists,
replace the system board.
3 4 BIOS Recovery image found
but invalid
● Flash latest BIOS version
● If the problem persists,
replace the system board.
3 5 Power rail failure
Replace the system board.
3 6 Flash corruption is detected
by SBIOS.
● Press the power button
for over 25 seconds to
do RTC reset. If the
problem persists, replace
the system board.
●
Disconnect all power
source (AC, battery, coin
cell) and drain flea power
by pressing and holding
down the power button
3~5 seconds to ensure all
power are drained.
● Run "BIOS recovery from
USB", and the instructions
are in the website
Dell
support.
● If the problem persists,
replace the system board.
3 7 Timeout waiting on ME to
reply to HECI message.
Replace the system board.
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 Pre-boot 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 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
system. It enables you to diagnose hardware issues, repair your computer, back up your files, and 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 the
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
Serviceability Tools at the Dell Support Site. Click SupportAssist and then click SupportAssist OS Recovery.
Real-Time Clock (RTC Reset)
The Real-Time Clock (RTC) reset function enables you or the service technician to recover Dell computers from No POST/No
Power/No Boot situations.
Troubleshooting
147
To Next Page
Loading...
