HP/Compaq nc2400 charging issues

Discussion in 'HP Business Class Notebooks' started by dztt, Jun 22, 2010.

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  1. dztt

    dztt Newbie

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    I have an nc2400 that I can't for the life of me figure out what is wrong with it. I have two power adapters one is brand new. I have 2 batteries one is old and the other is brand new. New battery is good and has a charge.

    With the laptop plugged in, it powers on but Windows 7 says no battery detected, thus won't charge the battery. If I unplug the cord after booting into windows, the laptop still runs but the battery light flashes constantly and windows still thinks its plugged in. If I try and boot with just the battery plugged in, the battery light flashes about 7 times but it never turns on. If I pull the plug after post it boots into windows but again does not recognize the battery and the light flashes.

    I have tried the whole shutdown, pull battery, hold power button thing. I have tried removing and reinstalling the ACPI battery driver. Tried differnt combination of both batteries and adapters. Nothing has worked. I guess it has to be a hardware issue as just booting on battery doesn't even post. Only thing I can think of is the power jack might be bad. But if the jack was bad I would think it wouldn't let me boot while plugged in. I don't have to wiggle the cable around either for it to recognize the power adapter.

    Any help greatly appreciated.

    *edit* I also tried installing the latest HP bios. Which did nothing.
     
  2. dztt

    dztt Newbie

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    Anyone ?? Ideas??
     
  3. 2.0

    2.0 Former NBR Macro-Mod®

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    Likely a motherboard issue.
     
  4. dztt

    dztt Newbie

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    Anything that can be replaced? I just picked up a new mobo on ebay, but if i can get this one working that's what I would prefer.
     
  5. Teraforce

    Teraforce Flying through life

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    Just curious, was there ever a time where this issue didn't occur when running Windows 7? How long have you had Windows 7, and how long has this issue existed?
     
  6. dztt

    dztt Newbie

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    I got the laptop used off ebay. It came loaded with XP and I reloaded Windows 7 on it. I'm fairly sure it was charging with XP but the battery that came with it was pretty much crap. I have since tried reloading XP but still has same issue. I didn't think that would do anything anyway as it cant be OS related since the issue exists before the OS even comes to play.
     
  7. dztt

    dztt Newbie

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    Well new motherboard fixed it. Wish I knew what was wrong with the original mobo.
     
  8. 2.0

    2.0 Former NBR Macro-Mod®

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    Glad you got that fixed.

    As for what actually happened, those things can be very hard to diagnose and pinpoint considering your symptoms. Could have been a blown component that stopped the system from recognizing and negotiating with the batt. And without schematics, the easiest route is always to replace a subsystem or motherboard.
     
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