OR
1 Shutdown the computer.
2 Press and hold the fn key, while pressing the power button, and then release both.
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 specic de
vice, 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.
GUID-2BD338A4-DB1F-492F-A464-D6D4C8643E7A
Device status lights
Table 5. Device status lights
Icon Name Description
Power
st
atus light
Turns on when you turn on the computer and blinks when the computer is in a power management mode.
Hard drive
st
atus light
Turns on when the computer reads or writes data.
Battery
char
ge
indicator
Turns on steadily or blinks to indicate battery charge status.
The device status LEDs are usually located either on the top or left side of the keyboard. They display the storage, battery and wireless
de
vices 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 Problem description Suggested resolution
2,1 CPU CPU failure
2,2 System board: BIOS ROM System board, covers BIOS corruption or ROM error
2,3 Memory No memory/RAM detected
2,4 Memory Memory/RAM failure
2,5 Memory Invalid memory installed
2,6 System board: Chipset System board/Chipset error
2,7 LCD Replace the system board
3,1 RTC Power Failure CMOS battery failure
3,2 PCI/Video PCI or video card/chip failure
Diagnostics 101
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