Dell Precision T5400 (Late 2007) - Manual (Page 122)

122 Troubleshooting Tools
blinking
green
The computer is in a
reduced power or
"sleep" state.
Use one of the appropriate
methods to "wake up" the
computer. See "Advanced
Features" on page 45.
If the problem is not
resolved and you are trying
to wake the computer with
a USB mouse or keyboard,
substitute the mouse or
keyboard with a working
PS/2 mouse or keyboard
and then try to wake the
computer.
green None. The system hardware
appears to be operating
normally. Any issues seen
may be related to the
operating system or
software.
(blinking)
amber The BIOS is not
executing.
Ensure that the processor is
seated correctly and restart
the computer (see
"Processor" on page 179).
If the problem is still not
resolved, contact Dell for
technical assistance (see
"Contacting Dell" on
page 295).
(blinking)
blinking
amber
A possible power
supply or power cable
failure has occurred.
Perform the procedure in
"Power Problems" on
page 116.
If the problem is still not
resolved, contact Dell for
technical assistance (see
"Contacting Dell" on
page 295).
Diagnostic Lights Power
Light Problem Description Suggested Resolution