Table 7. Diagnostic LED behavior(continued)
Blinking pattern
Problem description Suggested resolutionAmber White
2 1 CPU failure
• Run the Intel CPU
diagnostics tools.
• If problem persists, replace
the system board.
2 2 System board failure (included
BIOS corruption or ROM error)
• Flash latest BIOS version
• If problem persists, replace
the system board.
2 3 No memory/RAM detected
• Confirm that the memory
module is installed properly.
• If problem persists, replace
the memory module.
2 4 Memory/RAM failure
• Reset the memory module.
• If problem persists, replace
the memory module.
2 5 Invalid memory installed
• Reset the memory module.
• If problem persists, replace
the memory module.
2 6 System board / Chipset Error /
Clock failure / Gate A20
failure / Super I/O failure /
Keyboard controller failure
• Flash latest BIOS version
• If problem persists, replace
the system board.
3 1 CMOS battery failure
• Reset the CMOS battery
connection.
• If problem persists, replace
the RTS battery.
3 2 PCI or Video card/chip failure
Replace the system board.
3 3 BIOS Recovery image not found
• Flash latest BIOS version
• If problem persists, replace
the system board.
3 4 BIOS Recovery image found but
invalid
• Flash latest BIOS version
• If problem persists, replace
the system board.
3 5 Power rail failure
• EC ran into power
sequencing failure.
• If problem persists, replace
the system board.
3 6 SBIOS Flash corruption
• Flash corruption detected by
SBIOS
• If problem persists, replace
the system board.
3 7 Intel ME (Management Engine)
Error
• Timeout waiting on ME to
reply to HECI message
• If problem persists, replace
the system board.
72 Troubleshooting
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