Dell Laptop Shuts Down.

I have a Dell c640 that runs very well except for an annoying problem.
It will run for about 15 minutes then shuts off. I replaced the cooling
fan and heat sink with appropriate grease added for heat transfer.

Any ideas what else might be reacting to heat or?

I looked via Google with not much success.

TIA

You can see my thread further down - I was having the same problem, related
to the battery and adapter, doesn't necessarily sound like same thing
you're seeing, but I can't really tell...

"David Ellis" <dellis@iowatelecom.net> wrote...
>I have a Dell c640 that runs very well except for an annoying problem. It
>will run for about 15 minutes then shuts off. I replaced the cooling fan
>and heat sink with appropriate grease added for heat transfer.
>
> Any ideas what else might be reacting to heat or?
>
> I looked via Google with not much success.
>
> TIA

On Wed, 13 Feb 2008 10:45:18 -0600, David Ellis
<dellis@iowatelecom.net> wrote:

>I have a Dell c640 that runs very well except for an annoying problem.
>It will run for about 15 minutes then shuts off. I replaced the cooling
>fan and heat sink with appropriate grease added for heat transfer.
>
>Any ideas what else might be reacting to heat or?
>
>I looked via Google with not much success.
>
>TIA
My daughter gave me her old Dell which did that. Blowing out all the
various vent slots with compressed air was the cure.
FWIW
YMMV

"NickySantoro" <NickySantoro@optonline.net> wrote...
> On Wed, 13 Feb 2008 10:45:18 -0600, David Ellis
> <dellis@iowatelecom.net> wrote:
>
>>I have a Dell c640 that runs very well except for an annoying problem.
>>It will run for about 15 minutes then shuts off. I replaced the cooling
>>fan and heat sink with appropriate grease added for heat transfer.
>>
>>Any ideas what else might be reacting to heat or?
>>
>>I looked via Google with not much success.
>>
>>TIA
> My daughter gave me her old Dell which did that. Blowing out all the
> various vent slots with compressed air was the cure.
> FWIW
> YMMV

If it's a heat problem, wouldn't something like motherboard monitor be able
to tell you the status of everything on a dell laptop? If so, has the o.p.
tried that since he mentioned replacing heat sink etc?