Getting Started

Interpreting Diagnostic Lights and Audible Codes

This section covers the front panel light (LED) codes as well as the audible codes that may occur before or during the Power-On Self-Test (POST) that do not necessarily have an error code or text message associated with them.

If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed.

Diagnostic Front Panel Lights (LEDs) and Audible Codes

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

Green Power LED

None

Computer on.

None

On.

 

 

 

 

 

 

Green Power LED

None

Computer in Suspend None

flashes every two

 

to RAM mode (select

 

seconds.

 

models only) or

 

 

 

normal Suspend

 

 

 

mode.

 

Green Power LED None flashes four times, once per second.

Computer in Suspend None to Disk or “Hibernate” mode.

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