HP dx2100 Troubleshooting Guide - Page 21

Diagnostic Front Panel LEDs and Audible Codes, Activity, Beeps, Possible Cause, Recommended Action - ram

Page 21 highlights

Troubleshooting Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. None Computer on. No action required. Green Power LED flashes every two seconds. None Computer in Suspend to RAM mode (some models only) or normal Suspend mode. Press any key or move the mouse to wake the computer. Green Power LED stays on for four seconds then goes off for one second. None Processor thermal protection activated: A fan may be blocked or not turning. OR The heatsink/fan assembly is not properly attached to the processor. 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. 2. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/properly seated or installed. 3. If fan is plugged in and seated properly, but is not spinning, then replace processor fan. 4. Reseat processor heatsink and verify that the fan assembly is properly attached. 5. Contact an authorized reseller or service provider. Green Power LED flashes five times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. 5 Pre-video memory 1. Reseat DIMMs. Power on the error. system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Troubleshooting Guide www.hp.com 2-11

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Troubleshooting Guide
www.hp.com
2–11
Troubleshooting
Diagnostic Front Panel LEDs and Audible Codes
Activity
Beeps
Possible Cause
Recommended Action
Green Power LED
On.
None
Computer on.
No action required.
Green Power LED
flashes every two
seconds.
None
Computer in
Suspend to RAM
mode (some
models only) or
normal Suspend
mode.
Press any key or move the mouse to
wake the computer.
Green Power LED
stays on for four
seconds then goes
off for one second.
None
Processor thermal
protection
activated:
A fan may be
blocked or not
turning.
OR
The heatsink/fan
assembly is not
properly attached
to the processor.
1. Ensure that the computer air vents
are not blocked and the processor
cooling fan is running.
2. Open hood, press power button,
and see if the processor fan spins. If
the processor fan is not spinning,
make sure the fan's cable is
plugged onto the system board
header. Ensure the fan is
fully/properly seated or installed.
3. If fan is plugged in and seated
properly, but is not spinning, then
replace processor fan.
4. Reseat processor heatsink and
verify that the fan assembly is
properly attached.
5. Contact an authorized reseller or
service provider.
Green Power LED
flashes five times,
once every second,
followed by a two
second pause.
Beeps stop after
fifth iteration but
LEDs continue until
problem is solved.
5
Pre-video memory
error.
1. Reseat DIMMs. Power on the
system.
2. Replace DIMMs one at a time to
isolate the faulty module.
3. Replace third-party memory with
HP memory.
4. Replace the system board.