Dell OptiPlex 7070 Tower Service Manual - Page 83

Troubleshooting, Enhanced Pre-Boot System Assessment — ePSA diagnostics

Page 83 highlights

6 Troubleshooting Topics: • Enhanced Pre-Boot System Assessment - ePSA diagnostics • Power-Supply Unit Built-in Self-Test • Diagnostics • Diagnostic error messages • System error messages • Recovering the operating system • Real-Time Clock (RTC Reset) • Backup media and recovery options • WiFi power cycle 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. Troubleshooting 83

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Troubleshooting
Topics:
Enhanced Pre-Boot System Assessment — ePSA diagnostics
Power-Supply Unit Built-in Self-Test
Diagnostics
Diagnostic error messages
System error messages
Recovering the operating system
Real-Time Clock (RTC Reset)
Backup media and recovery options
WiFi power cycle
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.
6
Troubleshooting
83