1.Shutdown the computer.
2.Press and hold the <fn> key, while pressing the power button, and then release both.
The Enhanced
3.On the boot menu screen, select the Diagnostics option.
The Enhanced
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 14. Device Status Lights
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.
Turns on when wireless networking is enabled.
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.
The following table lists how to read the LED codes when possible errors occur.
Table 15. LED Lights
Storage LED | Power LED | Wireless LED | Fault Description |
|
|
|
|
Blinking | Solid | Solid | A possible processor failure has occurred. |
Solid | Blinking | Solid | The memory modules are detected but encountered |
|
|
| an error. |
Blinking | Blinking | Blinking | A system board failure has occurred. |
Blinking | Blinking | Solid | A possible graphics card/video failure has occurred. |
Blinking | Blinking | Off | System failed on hard drive initialization OR System |
|
|
| failed in Option ROM initialization. |
Blinking | Off | Blinking | The USB controller encountered a problem during |
|
|
| initialization. |
Solid | Blinking | Blinking | No memory modules are installed/detected. |
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