XPS 16 9640 Owner's Manual

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System-diagnostic lights

This section lists the system-diagnostic lights of your XPS 16 9640.

Table 1. System-diagnostic lightsThe following table provides the system-diagnostic lights of your XPS 16 9640.
Blinking pattern		Problem description
Amber	White	Problem description
1	1	TPM detection failure
1	2	Unrecoverable SPI Flash failure
1	3	Short in hinge cable tripped OCP1
1	5	EC unable to program i-Fuse
1	6	Generic catch-all for ungraceful EC code flow errors
2	1	CPU failure
2	2	System board failure (includes BIOS corruption or ROM error)
2	3	No memory or RAM detected
2	4	Memory or RAM failure
2	5	Invalid memory installed
2	6	System board or chipset error
2	7	Potential LCD panel damage or LCD cable failure (SBIOS message)
2	8	Power-rail failure at the system board
3	1	CMOS battery failure
3	2	PCI or video card or chip failure
3	3	BIOS Recovery image not found
3	4	BIOS Recovery image found but invalid.
3	5	Power-rail failure
3	6	Flash corruption is detected by SBIOS.
3	7	Timeout waiting on ME to reply to HECI message.

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.