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"Here is an example of DELL diagnostic lights
DELL System Diagnostic Lights
The power-status light indicates the power status of the computer.
These are the power states:
Solid white Computer is in S0 state. This is the normal power state of the computer.
Blinking white Computer is in a low-power state, S3. This does not indicate a fault.
Solid amber Computer is experiencing a boot failure, including the power-supply unit.
Blinking amber Computer is experiencing a boot failure but the power-supply unit is functioning correctly.
Off Computer is in sleep state, hibernation mode, or turned off.
The power-status light may also blink amber or white according to predefined ""beep codes"" indicating various failures.For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause.This 2,3 pattern continues until the computer is turned off, indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems
Diagnostic light codes
Amber, White Problem description
1, 2 Unrecoverable SPI Flash Failure2, 1 CPU configuration or CPU failure2, 2 System board: BIOS or Read-Only Memory (ROM) failure2, 3 No memory or Random-Access Memory (RAM) detected2, 4 Memory or Random-Access Memory (RAM) failure2, 5 Invalid memory installed2, 6 System board; Chipset Error; Failure of Clock, Gate A20, Super I/O or Keyboard controller3, 1 CMOS battery failure3, 2 PCI of Video card/chip failure3, 3 BIOS Recovery 1: BIOS recovery image not found3, 4 BIOS Recovery 2: Recovery image found but invalid3, 5 Power Rail Failure: EC ran into power sequencing failure3, 6 Paid SPI Volume Error3, 7 Management Engine (ME) error. Timeout waiting on ME to reply to HECI message.4, 2 CPU Power cable connection isssue.
Amber blinking? That means the power supply is good, according to DELL.
Dell XPS 18 Battery Replacement
Unplug power supply/charger. Take out the battery and and press the power button to dischage any power. After that is done, with the battery uninstalled, plug in the charger. Press power button. Does anything happen? Any flicker on the screen, beeps or lights. Describe."
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