Question about HP Pavilion dv9000z Notebook

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Laptop boots then shuts automatically off

My laptop boots but after a few seconds it completely shuts itself off. my comp keeps P**** me off, i restart and it wont boot up, the lights come on, then it shuts off, then boots up, nothing on the screen (again) then shuts down.

I cold boot it a couple of times, eventually the screen comes up and its fine
like wtf? lol why does it do that, i have no virus's

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  • bblume Nov 28, 2008

    I have the identical problem. My HP Pavilion notebook (dv9000) worked a couple times yesterday, but started seizing up and now will not power up after shut down. As yours, mine will try to come on but after about 15 seconds will shut down and try to restart in continuous cycles. I noticed there was a Vista upgrade that automatically downloaded the night before... not sure if this caused it, but I think HP knows of this issue. My notebook is 2 years old, and now they tell me I am eligible for a one time "Limited Warranty Enhancement Program", and they are sending me a box to return to them for a free service of the problem. Call them: 800-474-6836 maybe you will get the same deal.

  • bblume Nov 28, 2008

    I just became aware of the HP "Warranty Enhancement" announcement/link:
    http://h10025.www1.hp.com/ewfrf/wc/docum...


  • samirebr Jan 29, 2009

    exact same problem - tried taking out memory and re-inserting, and taking out battery and turning on without - same problem. boots to black screen for about 10 seconds and then dies. but sometimes it comes up fine - what do i do!?

  • Mark Robinson May 11, 2010

    any error messages or beeps ?

    might be worth taking out the ram chip and reinserting it....I see a lot of these types of problems in dusty environments

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If you haven't tried it yet, pull the battery out and try booting from the adaptor only. If it boots normally, then your battery pack may be bad (shorted cell) or the regulator that has the job of charging and monitoring the battery pack while keeping your system running may not be healthy.
If you own any multimeter (at the cost of Chinese DMMs, everyone should own one), check the battery pack for charge. Under normal conditions, they should measure a couple of percent higher than their rating. You will have either Lithium Ion or Nickle metal hydride batteries in the pack so should measure some multiple of the nominal cell voltage of one of those types that are respectively 3.6 & 1.2 volts. 

Posted on Nov 28, 2008

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1 Answer

Problem During Boot-Up


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laptops when plugged into contstant 120 power the battery is supposed to go into stand by mode and shut battery off so power dont leak into battery
if you have low battery with it plugged into 120 the comp will still think the battery is powering the laptop if battery dead then comp shuts down lack of power

other thing is somehow you caught a virus that reboots comp from dos screen mode
the main thing i always ask is what was the last thing that happened before it did what its doing now
example= was there a power surge pop up screens ect.

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