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Topics:
•
EC Diag LED Behavior
•
Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0
•
System error messages
•
Recovering the operating system
•
Real-Time Clock (RTC Reset)
•
Backup media and recovery options
•
WiFi power cycle
EC Diag LED Behavior
EC Diag LED Behavior
The following table depicts the amber and white blinking patterns with possible troubleshooting resolution:
Table 2. LED Behavior
Blinking pattern
Problem Description
Amber
White
1
2
Unrecoverable SPI Flash Failure
2
1
CPU failure
2
2
system board failure (included BIOS corruption or ROM error)
2
3
No memory/ RAM detected
2
4
Memory/ RAM failure
2
5
Invalid memory installed
2
6
System board / Chipset Error / Clock failure / Gate A20
failure / Super I/O failure / Keyboard controller failure
2
7
LCD failure
Troubleshooting
Suggested Resolution
• Run the Intel CPU diagnostics
tools
• If problem persists, replace the
system board
• Run the Intel CPU diagnostics
tools
• If problem persists, replace the
system board
Flash latest BIOS version
• Confirm that the memory module
is installed properly
• If problem persists, replace the
memory module
• Reset the memory module
• Reset the memory module
• If problem persists, replace the
memory module
• Flash latest BIOS version
• If problem persists, replace the
System board module
Flash latest BIOS version
Troubleshooting
4
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