Dell OptiPlex 5055 Ryzen APU Tower Owner's Manual page 82

Table 35. Diagnostic power LED codes (continued)
State
S6
S7
S8
82 Troubleshooting
State Name
STO
USB
MEM
Blinking Amber
Pattern
3 blinks > short pause >
3 blinks > long pause >
repeats
3 blinks > short pause >
4 blinks > long pause >
repeats
3 blinks > short pause >
5 blinks > long pause >
repeats
Problem Description
No Memory detected
Storage Subsystem
failure
Memory configuration
or incompatible error
Suggested
Resolution
If customer can assist
to troubleshoot, narrow
down the issue by
removing one by one
memory to determine
which one failed
and swapping to a
known good memory if
available to confirm.
If identified the memory
failed, replace the
memory.
If none of the memory
failed, replace the
motherboard.
Possible storage
device configuration in
progress or storage
subsystem failure.
If customer can
assist to troubleshoot,
narrow down the
issue by removing
one by one storages
on motherboard to
determine which one
failed.
If identified the storage
failed, replace the
storage.
If identified the storage
failed, replace the
storage.
Memory subsystem
configuration activity is
in progress. No memory
modules were detected.
If customer can assist
to troubleshoot, narrow
down the issue by
removing one by
one the memory
on motherboard to
determine which one
failed. Also, combining
the configuration to
validate appropriate
combination.
If identified the
component failed,
replace the component.
If none of
the component