Having problems with your HP Pavilion dv4000 Notebook ?

Hp pavillion dv4000 laptop freezes while loading windows and wont finish loading it.. what do i need to do?


Answers :

I have looked all around and no one has tried the fix that I have just tried. If your laptop freezes until it's moved slightly or you have to apply pressure around the touchpad / memory area it is neither those parts that are causing the problem. The real problem lies beneath. The problem is the southbridge intel chip. I fix Xbox 360's so I know a lot about cold solder points and it seams that HP placed the chip in an unstable area. The southbridge chip over time gets cooked under the plastic and sooner or later has cold solder joints which means it can constantly connect and disconnect its cold solder point. Every time it disconnects your laptop freezes because the flow has just stoped. The answer is to do two things. First you must find some sort of heat obsorbing pad, I had a thermal pad around which I used to fix an Xbox so I used that. I opened the laptop to the point that I could see the chip (make sure you know what your doing when opening your laptop!!!!). Then I just placed the thermal pad on top of it and closed the laptop. The other thing you should do which I can't since I do not have it, but you should use a heat gun in order to reflow the solder between the southbridge chip and the motherboard. The pads may not work entirely because they can sometimes only apply pressure and wont fully recconect the cold solder points below the chip. My laptop is working fine right now with only a couple freeze ups since it is in my lap and I have just applied the fix not to long ago but it would never work in this position before and leads me to the conclusion that it must be the chip. I did not use the heatgun method but if and when I do buy a heatgun I will definitely do so to prevent the very few freezes I still recieve. I hope this helps.
I have the same problem my man and I'll share what I've learned.
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\015\012This laptop locks up (caps light won't toggle - mouse won't move), sometimes during the boot and other times during normal operation ... when your data is exposed. Holding the pwr button to power off was my only recourse (ugh). In frustration, my wife hit the unit and it resumed operation.
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\015\012Try this - when the problem reoccurs, hit the front of the unit just to the left of the mouse pad. If the drive activity light flickers and the mouse responds, I have your fix.
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\015\012Turn the laptop upside down with the mouse pad facing away from you. GENTLY remove the top left cover (3 tiny screws), being careful not to damage the five plastic tangs. I slide mine to the center of the machine before lifting. Once it's off you'll see what I mean.
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\015\012Your memory and Blue Tooth is now exposed. When the problem occurs, press on the center of the Blue Tooth board with your thumb and if the drive light flickers and the mouse awakens, you are in the problem area.
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\015\012I suspect that the BT connector has an intermittent connection to the motherboard that may well be fixed by reheating the solder. Worst case is the connector must be replaced. The other possibility is the BT board itself - $35 on the net.
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\015\012This one has never been dropped or rough handled, but it does travel; wife is Realtor. I do hope this helps and think about doing regular backups ... your data is priceless.
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\015\012Keep me posted - Paul
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