Question about HP Compaq nc6120 Notebook

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HP Compaq nc6120 Fails to Boot

When I press the power button there is a short burst from the cooling fan - the hard drive active light shows green - the charging light flashes amber 8 times and then it all stops dead. No sign of life from the screen during this process. Any ideas very gratefully received.

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  • laura_jones2 May 20, 2009

    Checked memory as described - no change. I read in another thread this may be the CPU is that possible? They are readily available for this laptop at modest cost - worth a try??

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Here's a link to troubleshoot the startup of your notebook, from the HP online support site, and another link that explains how to reseat the ram, which is worth a try. Has it exhibited any unusual symptoms, blue screens, etc. recently? It sounds like either some kind of hardware conflict, or a bad power supply.
Unfortunately, the nc6120 has its internal power supply on the system board and can't be changed separately. The part #s and removal/replacement instructions are in the service manual, link here. This is a somewhat widespread issue, and if you're still covered by warranty, I recommend you get it in for service. Otherwise, you or a reliable tech could start selectively unplugging hardware and see if that is indeed the problem. See links to similar posts here.
Best of luck with it. I hate to be the bearer of bad news, but have it checked out before you buy a new board.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!



Posted on May 20, 2009

  • efs_perpends
    efs_perpends May 20, 2009

    For some people lifting the right front corner during boot allows it to continue. But this series of notebook has a history of issues, and you'll probably just have to wade through them to determine what it is in your case. I haven't seen the CPU problem in my searches, however.
    See the posts in this link., particularly here.
    There was also a recall of sony batteries for these laptops, because of overheating. See link here.
    ps did you ever live in S.Fe?
    Ed


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Your chipset is damage

open note book and press hand on intel chipset

if hand is very hot your chipset is damage

you need to change the board

Posted on Aug 03, 2010

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1 Answer

Aux power led light is amber on dimension E521


I think your problem is your memory or video card.

Below are some steps that I recommend.

When you plug in the power cord is there any lights whatsoever on the computer?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the computer and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in and hit the power button to see if it boots.

Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

Maybe your power supply is bad. Sometimes there is enough power to make the power light or some other lights come on but not enough power to make the fan turn on or hard drive spin.


Below are links and info I found from Dell's Website based on your model.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/specs.htm

Controls and Lights Front of computer:

Power button - push button

Power light
green light - Blinking green in sleep state; solid green for power-on state.
amber light - Blinking amber indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this indicates a problem with the system board (see "Power Problems" in your Owner's Manual).

Diagnostic lights
four lights on the front panel (see Diagnostic Lights.)

Standby power light
AUX_PWR_LED on the system board

Hard-drive activity light
green light - When the computer is reading data from or writing data to the hard drive.

LAN indicator light

green light - Solid green indicates that a LAN (local area network) connection is established.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/adtshoot.htm#wp1056411

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