Device Status Lights - Dell Precision 3510 Owner's Manual

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 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 2. Device status lights
Icon Name Description
Power Turns on when you turn on the computer and blinks when the computer is in a
status power management mode.
light
Hard Turns on when the computer reads or writes data.
drive
status
light
Battery Turns on steadily or blinks to indicate battery charge status.
charge
indicator
WiFi Turns on when wireless networking is enabled.
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 3. Battery charge LED indicator
Amber blinking
pattern
2,1
2,2
2,3
58
NOTE: Refer to the following table for Battery charge LED indicator codes.
Problem description
CPU
System board: BIOS ROM
Memory
Suggested resolution
CPU failure
System board, covers BIOS corruption or
ROM error
No memory/RAM detected