System Diagnostic Lights - Dell Inspiron 14 7425 2-in-1 Service Manual

System diagnostic lights

Battery-status light
Indicates the power and battery-charge status.
Solid white — Power adapter is connected and the battery has more than 5 percent charge.
Amber — Computer is running on battery and the battery has less than 5 percent charge.
Off
● Power adapter is connected, and the battery is fully charged.
● Computer is running on battery, and the battery has more than 5 percent charge.
● Computer is in sleep state, hibernation, or turned off.
The battery-status light blinks amber along with beep codes indicating failures.
For example, the 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.
Table 10. LED codes
Diagnostic light codes
(Amber, white)
1,1
1,2
2,1
2,2
2,3
2,4
2,5
2,6
2,7
2,8
3,1
3,2
3,3
3,4
3,5
3,6
3,7
4,1
Camera status light: Indicates whether the camera is in use.
● Solid white — Camera is in use.
● Off — Camera is not in use.
Caps Lock status light: Indicates whether Caps Lock is enabled or disabled.
● Solid white — Caps Lock enabled.
● Off — Caps Lock disabled.
62 Troubleshooting
Problem description
TPM detection failure
Unrecoverable SPI flash failure
Processor failure
System board: BIOS or Read-Only Memory
(ROM) failure
No memory or Random-Access Memory (RAM)
detected
Memory or Random-Access Memory (RAM)
failure
Invalid memory installed
System-board or chipset error
Display failure - SBIOS message
Display failure - EC detection of power rail
failure
CMOS battery failure
PCI, video card/chip failure
BIOS recovery image not found
Recovery image found but invalid
Power-rail failure
System BIOS Flash incomplete
Management Engine (ME) error
Memory power-rail failure