These are laptops so reseating the CPU is a big task. I'm sure it's not a heat problem because when they fail it's from a cold start. And when they work correctly they can be at full operating temp. 

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On Oct 15, 2011, at 10:47 PM, Mike <[log in to unmask]> wrote:

> 
> 
> I would reseat the possessor, & use new heat sink compound
> 
> 
> In a message dated 10/15/2011 10:11:25 P.M. Central Daylight Time,  
> [log in to unmask] writes:
> 
> I  have two Dell Latitude D630 laptops running Vista Business and one  
> D620 running XP. All three were in my to be scrapped  pile  because I 
> couldn't get a video image either on the laptop or on an  external 
> monitor. Maybe I'd get an image one out of 10 tries (turn  on) if at all. 
> It appears the backlight is on, and the computer  seems to be running. I 
> have tried all the things I can think of,  including replacing memory, 
> HDD and with and without battery. I gave  them one last chance before 
> parting them out and lo and behold, now  they seem to work reliably.
> Sure looks like a GPU chip, but I would  expect them to die completely. 
> Maybe they were just tired and needed  a rest!
> Any ideas of what's going on?
> 
> PCBUILD maintains hundreds of useful files for  download
> visit our download web page at
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> 
> 
> 
> 
>         PCBUILD maintains hundreds of useful files for download
>                     visit our download web page at
>                  http://freepctech.com/downloads.shtml
> 

         PCBUILD maintains hundreds of useful files for download
                     visit our download web page at:
                  http://freepctech.com/downloads.shtml