Question about HP Pavilion dv9000z Notebook

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Dv9920us motherboard check

No fan, no hdd noise, no lights

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Remove the power supply, battery, hard drive and RAM. Connect the power supply on its own and press power on. If it now goes to the first screen, add the RAM and then the hard drive. If it did nothing, I would suspect the GPU has unsoldered itself from the motherboard due to overheating.

Posted on Dec 26, 2013


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Dv9920us won't start

Probably dead motherboard or ac circuit adapter.
In both occasions an expert should dissasemble your laptop to check whether the problem is exactly.

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Hi, Could be HDD problem. Take to shop for repair. Laptop was or is over heating. Clean out vents. Don't put laptop on pillows or soft places only on hard table tops. Hope that helps.

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Nothing comes on picture blank

A few things to try
1.) Check the laptop on an external monitor, do you get a picture
2.) Is there power to the laptop from the battery and the charger? Try to see if the charger indicator lamp is blinking green rather than steady green
3.) Can you hear hard drive / fan noises and are there any lights on the laptop?

If the charger is blinking, indicates that power is not making the circuit, check tightness of charging port, if tight, assume fault on motherboard / blown main fuse

If picture on external monitor and not on laptop, assume backlight on screen dead or possibly the inverter

If no noises from HDD or Fan and No lights on laptop, then fault with motherboard

If you do get fan noises etc, but get BLINKING lights on laptop, assume possible fault with graphics chip, repost with details of blinking lights / colour and specific model of laptop

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1 Answer

Powers up (fan noise & power light) then fan stops. No video output (even to external monitor) no HDD noise. Is this the motherboard? If so, what price am I looking at for repair?

I suggest that there is some problem with the hardware and you need to replace the hard disk drive.

If you can borrow from a friend or from a repair shop to test other HDD and it works again. that would be the problem. You need to located which hardware cause the problem.

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Any HDD light on / if not could be failed HDD OR faulty IDE / Sata cable.

Did you get posting beep if not remove / replace ram / reboot.

If you did then either mobo / CPU may be faulty.

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1 Answer

Fan running blank screen cant get into bios.was ok now this

Lets not jump to conclusions. Personally I feel that if give it a thorough cleanup without removing the Processor from under the heat sink, clean all the contact points, specially the power connection to your HDD(if its SATA it will make faster noises) and this could be due corrupted OS files too, but if the noise in the HDD persists, then its advisable to replace it if still under warranty, else use any working HDD and check to see if the same thing happens again. Don;t forget to repair your OS first. Also do checkdisk yiur HDD partitions particularly the one where the OS is installed and if it throws uo any bad sectors then the first thing to do is install the OS on a different partion. If it behaves properly then you have to make a desicion regarding repairing/replacing the HDD.....sodeep

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