Device Status Lights - Dell P72G Owner's Manual

The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer. The diagnostics starts
running the tests on all the detected devices.
3 On the boot menu screen, select the Diagnostics option.
The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer. The diagnostics starts
running the tests on all the detected devices.
4 If you wish to run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.
5 Select the device from the left pane and click Run Tests
6 If there are any issues, error codes are displayed.
Note the error code and contact Dell.

Device status lights

Table 5. Device status lights
Icon Name
Power
status light
Hard drive
status light
Battery
charge
indicator
The device status LEDs are usually located either on the top or left side of the keyboard. They display the storage, battery and wireless
devices connectivity and activity. Apart from that they can be useful as a diagnostic tool when there's a possible failure to the system.
NOTE: The position of the power status light may vary depending on the system.
The following table lists how to read the LED codes when possible errors occur.
Table 6. Battery charge LED indicator
Amber blinking pattern
2,1
2,2
2,3
2,4
2,5
2,6
2,7
3,1
3,2
3,3
3,4
The blinking patterns will consist of 2 set of numbers being represented by (First Group: Amber blinks, Second Group: White blinks)
Description
Turns on when you turn on the computer and blinks when the computer is in a power management mode.
Turns on when the computer reads or writes data.
Turns on steadily or blinks to indicate battery charge status.
Problem description
CPU
System board: BIOS ROM
Memory
Memory
Memory
System board: Chipset
LCD
RTC Power Failure
PCI/Video
BIOS Recovery 1
BIOS Recovery 2
Suggested resolution
CPU failure
System board, covers BIOS corruption or ROM error
No memory/RAM detected
Memory/RAM failure
Invalid memory installed
System board/Chipset error
Replace the system board
CMOS battery failure
PCI or video card/chip failure
Recovery image not found
Recovery image found but invalid
Diagnostics 85