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 power and battery-status light blinks amber along with beep codes indicating 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.
Blinking Pattern
Problem description
Suggested resolution
1
1
TPM detection failure
Replace the system board.
1
2
Unrecoverable SPI flash
failure
Replace the system board.
1
5
EC unable to program i-Fuse
Replace the system board.
1
6
Generic catch-all for
ungraceful EC code flow
errors
Disconnect all power source
(AC, battery, coin cell) and
drain flea power by pressing &
holding down power button.
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 and swap memory
modules amongst the slots. If
problem persists, replace the
memory module.
2
5
Invalid memory installed
Reset and swap memory
modules amongst the slots. If
problem persists, replace the
memory module.
2
6
System board / Chipset Error
Replace the system board.
2
7
LCD failure (SBIOS message)
Replace the LCD module.
2
8
LCD failure (EC detection of
power rail failure)
Replace the system board.
3
1
CMOS battery failure
Reset the CMOS battery
connection. If problem
persists, replace the RTC
battery.
124
Troubleshooting
Содержание Inspiron 5421
Страница 6: ...Chapter 6 Getting help 127 Contacting Dell 127 6 Contents ...
Страница 14: ...Major components of your system 1 Base cover 14 Removing and installing components ...
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Страница 83: ...Removing and installing components 83 ...
Страница 103: ...20 Follow the procedure in After working inside your computer Removing and installing components 103 ...