GUID-A27EB21E-BACD-423F-AC5C-DC2A051C2B48
Troubleshooting
GUID-F349C46F-8756-4A48-96EB-C469B70BAE45
Dell Enhanced Pre-Boot System Assessment — ePSA
diagnostic 3.0
You can invoke the ePSA diagnostics by performing either of the following steps:
•
Press the F12 key when the system boots and choosing
Diagnostics
option.
•
Press Fn+PWR when the system boots.
For more details, see
GUID-5FC0D943-B848-4BDC-9A26-78A5E88FDA45
Running the ePSA diagnostics
1
Power-on the 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 key at the bottom left corner.
Diagnostics front page is displayed.
5
Press 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.
GUID-8D55A66D-C835-4685-B13C-A5E9659C765D
Real Time Clock (RTC) reset
The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and
Precision systems from select
No POST/No Boot/No Power
situations. You can initiate the RTC reset on the system from a power off
state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC reset occurs after you release
the power button.
NOTE:
If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds, the
RTC reset process is aborted.
The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro and reset the system date and time. The following items are
unaffected by the RTC reset:
8
104
Troubleshooting