Compaq 177620-006, Compaq Evo Desktop - page 65

Troubleshooting Guide A–15
Post Error Messages
Flashing Num
Lock LED on
Keyboard (on
select models.)
1S, 2L* System memory not
present.
1. Check memory module
(see the relevant section
of the
Hardware
Reference Guide
).
2. Remove and reseat
memory module.
3. See the “Solving Memory
Problems” section of this
guide.
ÄCAUTION: Some models support ECC memory and non-ECC memory. Other models
support only non-ECC memory. For those systems that do support ECC memory,
Compaq does not support mixing ECC and non-ECC memory. In addition, the
system will not boot the operating system.
Num Lock LED On
(keyboard).
None Failed Boot Block. Reflash the ROM using a
ROMPaq diskette. See the
“Failsafe Boot Block ROM”
section of the
Desktop
Management Guide.
Flashing Scroll
Lock LED on
keyboard (on
select models.)
2L, 1S* System board hardware
failure (prior to
graphics).
Replace system board.
Green Power
LED flashes
1x / second.
None Computer in normal
Suspend mode.
None
Green Power
LED On.
None Computer on. None
*L = Long, S = Short
Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes
Activity Beeps Probable Cause Recommended Action
177620-006.book Page 15 Thursday, March 14, 2002 3:16 PM