Diagnostic Front Panel Leds And Audible Codes - Compaq dx2355 - Microtower PC Troubleshooting Manual

Diagnostic Front Panel LEDs and Audible Codes

Activity
Green Power LED On.
Green Power LED flashes
every two seconds.
CPU Fan weak
(RPM < 1000) or not
turning, Display
Warning message and
Long Beep for 5 sec and
shut down.
System Fan weak
(RPM < 1000) or not
turning, Display
Warning message and
Long Beep for 5 sec and
shut down.
1 short beep and 1 long
beep followed by a
three second pause.
2 short beeps and 1
long beep followed by a
three second pause.
Troubleshooting Guide
Beeps Recommended Action
None None
None Not support wake up by mouse/keyboard.
Should be Press Power button.
2 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.
2 Bad memory or memory configuration 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.
3 No graphics card installed or graphics card
initialization failed.
For systems with a graphics card:
1. Reseat the graphics card. Power on the system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics, replace the
system board.
www.hp.com
Troubleshooting
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