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From: jinxy on 1 Nov 2009 18:22
On Nov 1, 12:08 pm, Paul <nos...(a)needed.com> wrote:
> Ray wrote:
> > When i start my computer up, the fan starts to whirl very loud and after 20
> > secs the computer shuts down, any ideas ?
>
> Check to see if the clip that holds the CPU heatsink/fan to the
> CPU socket is broken. It could be, that the CPU is not being
> cooled, because the heatsink is no longer in contact with the
> top of the CPU.
>
> Modern processors have "THERMTRIP", which is overheat protection,
> and that signal is tied into the PS_ON# signal on the power
> supply. If the CPU thinks it is getting too hot, that hardware
> signal shuts off the power, without needing any software to do it.
> It is effectively just a thermal diode and hard wired logic.
>
> If you take it apart, you can put some fresh thermal paste on
> top of the processor. The thermal paste enhances heat transfer.
> A thin layer of paste, displaces air in the gap between the two surfaces.
>
> http://www.arcticsilver.com/pdf/appinstruct/cmq/ins_cmq_singlecore_wc...
>
>     Paul

Remove the power supply and open it up , look for blown or buldging
caps. If you see any, replace the unit.
-J
From: gnu / linux on 7 Nov 2009 14:13
On Nov 1, 7:42 am, John McFerren <robbie.mcfer...(a)gmail.com> wrote:
> On Sun, 1 Nov 2009 13:18:35 -0000, Ray wrote:
> > When i start my computer up, the fan starts to whirl very loud and after 20
> > secs the computer shuts down, any ideas ?
>
>a few possibilities.

good ideas !
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