Preboot Blinking Power Button Codes - Dell Precision 7820 Tower Owner's Manual

NOTE: If the hard drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not
turn on.
NOTE: Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used.
Table 21. Hard drive indicator codes
Hard drive status indicator code
Flashes green twice per second
Off
Flashes green, amber, and then turns off
Flashes amber four times per second
Flashes green slowly
Solid green
Flashes green for three seconds, amber for three seconds,
and then turns off after six seconds

Preboot blinking power button codes

Table 22. Power button LED state
Power Button LED State
Off
Blinking Amber
Blinking White
Solid Amber
Solid White
Table 23. Diagnostic Indicator table
Power Light: Amber-White
Blinking
1-1
1-2
Amber/White Blinking
Pattern
1 amber blink followed by a short
pause, 1 white blink, long pause,
then repeats
1 amber blink followed by a short
pause, 2 white blinks, long
pause, then repeats
Condition
Identifying drive or preparing for removal.
Drive ready for removal.
NOTE: The drive status indicator remains off until all drives
are initialized after the system is turned on. Drives are not
ready for removal during this time.
Predicted drive failure.
Drive failed.
Drive rebuilding.
Drive online.
Rebuild stopped.
Description
Power is Off. LED is blank.
Initial State of LED at power up. See the table below for Blinking
Amber pattern diagnostic suggestions and possible failures.
System is in a low power state, either S1 or S3. This does not
indicate a fault condition.
The second state of the LED at power up, indicates that the
POWER_GOOD signal is active and it is probable that the power
supply is fine.
System is in S0 state. This is the normal power states of a
functioning machine. The BIOS will turn the LED to this states to
indicate it has started fetching op-codes.
Problem Description
Faulty System board
Bad system board, Power
Supply or Power Supply cabling
Suggested Resolution
To troubleshoot the issue with
system board, contact Tech
support.
• If you can assist to
troubleshoot, narrow down
the issue with PSU BIST
Test, reseat cable.
• If nothing works, contact
Tech Support
Troubleshooting 127