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Hp pavillion dv6700 shuts off after being on for just a few seconds

I have an hp dv7600 that the hard drive crashed in. window vista
I installed a new hard drive.
It came up with "Setup did not find any hard disk drives installed in your computer"
So i reset it to factory defaults in bios.
Now it turns on and just shuts off after a few seconds.
Seems like a bios setting but even if i go itno setup and try to change stuff in bios it will shut down while i am in bios.
Anyone have any ideas?
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jhreboot
Asked:
jhreboot
4 Solutions
 
CallandorCommented:
Check your battery state - it will shut down if it thinks there is not enough power.  Did the laptop stay on before you reset the BIOS?
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jhrebootAuthor Commented:
it is plugged in
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jhrebootAuthor Commented:
the laptop stayed on before the reset.
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web_trackerCommented:
Your laptop could be over heating and to prevent it from over heating it shuts down. Do you notice that as soon as you turn it on the fans are going at full speed? If you have a can of compressed air I would try blowing out dust from the system by spraying air into the vents to see if that may improve. If not you may need to take it apart to clean out the dust from the system. Often dust/lint accumulates so thickly between the heat sink and fan (the lint similar to the lint you get from the clothes drier). When this happens you will not be able to blow the dust out. I saved many laptops by disassembling, cleaning out the dust.  
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Anthony RussoCommented:
My daughters HP dvXXXX laptop did the same thing for a while. Turns out it was a broken fan internally that wasn't spinning so the laptop shut down instantly when turned on not to overheat.

Definitely check the vents for dirt and fans for dirt and functionality.

Anthony
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CallandorCommented:
If it shuts down within seconds of starting up, it could be the heatsink is making bad contact with the cpu (a dust problem would take much longer to cause a shutdown, on the order of minutes).  To fix it, you would have to remove the heatsink, clean off the old thermal paste, reapply a small drop of new paste, and reseat the heatsink on the cpu.  When you installed the new drive, you may have knocked the heatsink off the cpu or jarred it loose.

There seems to be others who have problems with this model http://h30434.www3.hp.com/t5/Notebook-Hardware/Pavilion-dv6700-won-t-start/td-p/215341.  If you have an nVidia graphics chip, it may be defective and is overheating: http://augustapcrepair.wordpress.com/2011/01/08/hp-dv2000-dv6000-dv9000-series-motherboard-repair-65/  The fix for this is to reflow the solder so that the cracked joints are no longer making poor contact.
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nobusCommented:
the disk crash can point to bad hardware, so i suggest to remove devices to test if stays on
You find a nice procedure here :
-remove all external devices
- if no display - test with an external monitor
- test if it runs from battery alone, or from AC alone
- test also with a known good battery !
- remove battery and AC adaptor, hold power button for 20 sec, connect AC and reboot --> any display ? if NO -->
- disconnect all disk and cd drives, battery , and other cards and peripherals, leave only 1 ram stick
- boot -->any display ?
- if NO remove all ram and reboot --> if NO beeps, mobo or cpu bad ; if it beeps, replace ram stick
-if you can access the bios battery, remove the battery, AC, and bios battery for a minute to reset the bios
or test it, it should read 3 V
*** you can test the disk on another pc, if you like !
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jhrebootAuthor Commented:
Thank you.
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