Dell Vostro 3478 Vostro 14-3478 Owners Manual - Page 72

Troubleshooting, Enhanced Pre-Boot System Assessment — ePSA diagnostics

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7 Troubleshooting Enhanced Pre-Boot System Assessment - ePSA diagnostics The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: The ePSA diagnostics can be initiated by the FN+PWR buttons while powering on the computer. • Run tests automatically or in an interactive mode • Repeat tests • Display or save test results • Run thorough tests to introduce additional test options to provide extra information about the failed device(s) • View status messages that inform you if tests are completed successfully • View error messages that inform you of problems encountered during testing NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminal when the diagnostic tests are performed. Running the ePSA Diagnostics Invoke diagnostics boot by either of the methods that are suggested below: 1. Power on the computer. 2. As the computer boots, press the F12 key when the Dell logo is displayed. 3. In the boot menu screen, use Up/Down arrow key to select the Diagnostics option and then press Enter. NOTE: 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. Press the arrow in the lower-right corner to go to the page listing. The detected items are listed and tested. 5. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test. 6. Select the device from the left pane and click Run Tests. 7. If there are any issues, error codes are displayed. Note the error code and contact Dell. or 8. Shut down the computer. 9. Press and hold the Fn key, while pressing the power button, and then release both. 10. Repeat steps 3-7 above. Diagnostic LED This section details the diagnostic features of the battery LED in a notebook. Instead of beep codes errors are indicated via the bicolor Battery Charge LED. A specific blink pattern is followed by flashing a pattern of flashes in amber, followed by white. The pattern then repeats. NOTE: The diagnostic pattern will consist of a two digit number being represented by a first group of LED blinks (1 through 9) in amber, followed by a 1.5 second pause with the LED off, and then a second group of LED blinks (1 through 9) in white. This is then followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes 0.5 seconds. 72 Troubleshooting

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Troubleshooting
Enhanced Pre-Boot System Assessment — ePSA
diagnostics
The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the
BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device
groups allowing you to:
The ePSA diagnostics can be initiated by the FN+PWR buttons while powering on the computer.
•
Run tests automatically or in an interactive mode
•
Repeat tests
•
Display or save test results
•
Run thorough tests to introduce additional test options to provide extra information about the failed device(s)
•
View status messages that inform you if tests are completed successfully
•
View error messages that inform you of problems encountered during testing
NOTE:
Some tests for specific devices require user interaction. Always ensure that you are present at the computer
terminal when the diagnostic tests are performed.
Running the ePSA Diagnostics
Invoke diagnostics boot by either of the methods that are suggested below:
1.
Power on the computer.
2.
As the computer boots, press the F12 key when the Dell logo is displayed.
3.
In the boot menu screen, use Up/Down arrow key to select the
Diagnostics
option and then press
Enter
.
NOTE:
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.
Press the arrow in the lower-right corner to go to the page listing.
The detected items are listed and tested.
5.
To run a diagnostic test on a specific device, press Esc and click
Yes
to stop the diagnostic test.
6.
Select the device from the left pane and click
Run Tests
.
7.
If there are any issues, error codes are displayed.
Note the error code and contact Dell.
or
8.
Shut down the computer.
9.
Press and hold the Fn key, while pressing the power button, and then release both.
10.
Repeat steps 3–7 above.
Diagnostic LED
This section details the diagnostic features of the battery LED in a notebook.
Instead of beep codes errors are indicated via the bicolor Battery Charge LED. A specific blink pattern is followed by flashing a pattern of
flashes in amber, followed by white. The pattern then repeats.
NOTE:
The diagnostic pattern will consist of a two digit number being represented by a first group of LED blinks (1
through 9) in amber, followed by a 1.5 second pause with the LED off, and then a second group of LED blinks (1 through
9) in white. This is then followed by a three second pause, with the LED off, before repeating over again. Each LED blink
takes 0.5 seconds.
7
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Troubleshooting