Troubleshooting; Enhanced Pre-Boot System Assessment (Epsa) Diagnostics; Running The Epsa Diagnostics; Diagnostics - Dell Inspiron 5491 2n1 Service Manual

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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:
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

1. Turn on your computer.
2. As the computer boots, press the F12 key as the Dell logo appears.
3. On the boot menu screen, select the Diagnostics option.
4. Click the arrow at the bottom left corner.
Diagnostics front page is displayed.
5. Click the arrow in the lower-right corner to go to the page listing.
The items detected are listed.
6. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.
7. Select the device from the left pane and click Run Tests.
8. If there are any issues, error codes are displayed.
Note the error code and validation number and contact Dell.
Diagnostics
Power and battery-status light:
Indicates the power state and battery state of the computer.
Solid white – Power adapter is connected and the battery is charging.
Solid amber – Battery charge is low or critical.
Off – Battery is fully charged.
For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by
a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.
The following table shows different light patterns and what they indicate.
Table 19. Diagnostics
Diagostic light codes
2,1
Problem description
Processor failure

Troubleshooting

Troubleshooting
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