On Mon, 16 Aug 2010 01:17:03 -0700, Mike De Petris wrote:

On Aug 15, 6:46Â*pm, Meat Plow wrote:
On Sun, 15 Aug 2010 09:25:04 -0700, Jeff Liebermann wrote:
On Sun, 15 Aug 2010 15:13:09 +0000 (UTC), Meat Plow
wrote:

Is that a dual core CPU or hyperthreaded single core.

1.73GHz Intel Core 2 Duo Mobile T5300

Ok it's got two cores. Reason I asked was disabling say a 2 ghz single
core HT CPU can acutally boost performance. When in HT mode the RAM and
the CPU process at 1 ghz.

After the "cpu disabled trick" worked well for hours, with laptop
running and restarting with it PSU, I had no more luck. The day after it
didn't start as before. Tried the trick again, I even disabled both cpus
in devmgmt but no luck. Used an hardware monitoring program to
investigate situation but nothing helps, only curious thing is that
trying to access ACPI temperature values the pc suddenly powered down.

Even when all seems running weel on battery, or "fake battery" with 12V
PSU, the pc freezes at a point in some conditions that I still have to
determine, but to me this shows it's an hardware fault. When running on
normal PSU in Windows 7 I tried to change the options for the
power/tilt/sleep buttons and the pc freezed, and that was when it didn't
worked any more that way. Power buttons options can be changed without
problem running on battery. On battery the pc can run for hours, but it
seems that stressing it a bit and leaving it alone leads to a freeze or
a sudden power down, maybe when the power management decides to do
something, something that I cannot know as I simply find the pc hanging
on or completely powered off.

I must check the motherboard, but except for ONE capacitor in the power
section that is 3 or 4 mm big (and still smd) all others are small SMD,
and you can just identify them by being marked Cnumber as I think all
resistors are Rnumber.

The problem is I need to find a day with plenty of time, as to test
those capacitors needs to unweld them with hot air check and solder them
again, and they are soooo small... there are smd three-legs transistor
components too, but I do not think I would be able to check them.

Maybe I should start with the few fuses and resistors as they can be
checked in place to see if they are opened, at least.


You seem to have a decent strategy in place. Have you thought about
installing a software program that can monitor CPU core and other
voltages? I've used Motherboard Monitor on desktops, it may work on your
Intel based board. And it's a free utility.

http://www.softpedia.com/get/System/...-Monitor.shtml

All motherboards have some sensors and/or other ACPI based sensors.



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