Chapter 7: Troubleshooting Your Computer; Power-Supply Unit Built-In Self-Test; Diagnostic Power Led Codes - Dell OptiPlex 3050 Small Form Factor Owner's Manual

You can troubleshoot your computer using indicators like diagnostic lights, beep codes, and error messages during the operation
of the computer.
Topics:
•

Power-Supply Unit Built-in Self-Test

•

Diagnostic power LED codes

• Power LED issue
• Diagnostic error messages
• Verifying system memory
• System error messages
•
Real-Time Clock (RTC Reset)
• Backup media and recovery options
• WiFi power cycle
Power-Supply Unit Built-in Self-Test
Built-in Self-Test (BIST) helps determine if the power-supply unit is working. To run self-test diagnostics on the power-supply
unit of a desktop or all-in-one computer, see the knowledge base article
Diagnostic power LED codes
Table 24. Diagnostic power LED codes
Power LED light status
Off
Steady/blinking amber
58 Troubleshooting your computer
Troubleshooting your computer
Possible cause
The computer is either turned
off or is not receiving power
or in Hibernation mode.
Computer fails to complete
POST or processor failure.
000125179 at www.dell.com/support.
Troubleshooting steps
● Re-seat the power cable
● If the computer is plugged
● Ensure the electrical outlet
● Remove and reinstall any
● Remove and reinstall
7
in the power connector on
the back of the computer
and the electrical outlet.
into a power strip,
ensure that the power
strip is plugged into an
electrical outlet and is
turned on. Also, bypass
power protection devices,
power strips, and power
extension cables to verify
that the computer turns
on properly.
is working by testing it
with another device, such
as a lamp.
cards.
the graphics card, if
applicable.