Just had a HP DV6000 laptop in which the customer reported to me as having a problem with the screen. It had been restarting itself or the screen freezing in use but now it would not even start up.
It did not take me long to research this problem. I found many references and alot of youtube videos on the subject. The problem is a basic design flaw. You have heat from the processor going directly over the graphics processor chip, so you have your GPU running hotter than your processor and if it gets too hot, the solder holding the chip melts and the chip becomes unseated. The processor and GPU are upside down on the motherboard so effectively the GPU is dropping out of the board.
The fix is simply dismantling the laptop, and carefully, reheat the GPU so the solder makes contact with the motherboard again. I used the blowtorch attachment for my butane powered soldering iron to limit the area to be heated. Once cooled down replaced the paste on the processor and GPU cleaned out the fan and put it all back together. Key Presto it worked.
I use a program called speedfan to monitor the temperatures and another called hot cpu tester to get the temperature up and all was good.
Iam a bit concerned about my HP DV9500 as this has always been very hot but then I like to run it at maximum power!
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