Troubleshooting
Enhanced Pre-Boot System Assessment (ePSA)
diagnostics
About this task
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
Steps
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
The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working
appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode.
However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated on
the Power button.
The following table shows different light patterns and what they indicate.
4
86
Troubleshooting
Summary of Contents for D28M
Page 1: ...OptiPlex 7071 Tower Service Manual Regulatory Model D28M Regulatory Type D28M001 ...
Page 41: ...Disassembly and reassembly 41 ...
Page 43: ...Disassembly and reassembly 43 ...
Page 60: ...60 Disassembly and reassembly ...
Page 61: ...Disassembly and reassembly 61 ...
Page 63: ...Disassembly and reassembly 63 ...
Page 64: ...64 Disassembly and reassembly ...
Page 65: ...Disassembly and reassembly 65 ...
Page 83: ...5 Click Begin Flash Update and then a warning message is displayed System setup 83 ...
Page 84: ...6 Click Yes The systems restarts automatically and starts BIOS Flash 84 System setup ...