Question about HP Pavilion dv9000z Notebook

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HP Pavillion dv9000 won't turn on.

Dv9720 had been having a display issue. Used external display. Suddenly, laptop display comes back and works fine for nearly a month. This morning, tried to power the laptop on. Lights come on, fan comes on, DVD check is made, then shuts off. It continues to repeat this process until I force it off. Tried various methods to get it to turn on. (Reseated memory, held down power button with battery removed, etc...)

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Thermal Damage..

You first need to check the Fan and Heatsink Assembly.. Clean the heatsink Fins and Fanblades..

Then .. The Graphics Chip will need to be "ReFlowed".. Using Either Infrared or a Heat Gun...

Your Issue Is The Nvidia Chip... It Makes it's connection to the motherboard using solder balls on the underside of the chip...(it's located right next to the CPU).. Due to Thermal Breakdown - the Chip Can Lose Connection to Certain Areas of the ball grid array... Performing A Chip Reflow Heats the chip and reconnects the faulty areas.. Thus stopping the shutdown issues and fixing your video..

Posted on Nov 15, 2009

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Posted on Jan 02, 2017

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The inverter to the back light may have gone out. Connect it to an external monitor from the VGA port of the laptop. You might need to set your function key to toggle or turn on the VGA port in order to display to the external monitor. If the monitor works, then the inverter or back light is bad.

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You have an Intel-based laptop (sounds like it).

The failure is due to the vram on the mlb (systemboard). Good news is this is a common failure for the Intel's and is readily fixed, prob is the vram and nVidia chip need to be reflowed using a BGA machine (about the price of a Lexus).

Without a viable repair option, you'll need to replace the mlb. Part# located in the memory bay (middle cover underneath the laptop), and expect to pay upwards of $450 from HP for just the part. *** BEWARE getting this part from a 3rd-party vendor, as they may NOT have reflowed the chips and have the issue resolved

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1 Answer

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HP *had* issued service alert 08112101 which covers the left display hinge failure.
HP Notebook Left Display Hinge Program
HP Pavilion Notebook
model series affected: dv9000, dv9100, dv9200, dv9400.

This program recently ended on May 31, 2009, but HP may still allow for a grace period.

Otherwise, you'll need the following:
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Trained pro's should be able to do this in about 20mins, there is partial lower case disassembly and complete LCD housing dis/re-assembly.

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HP Pavillion DV9000


Howdy,
Like you said if you purchase it 5 month ago it should still be under the warranty. if i were you i will go that route

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u must be having problem in output display driver,,,try replacing it

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