Prev: Big problem - CPU says it is -128 degrees!
Next: 4-in-1, 6-in-1 ink economy
From: AdenOne on 31 Jan 2008 21:14
> Occasionally, parts do not get soldered properly to the motherboard.
> Sometimes the legs on a chip are "dry", or there is an intermittent
> connection. Using a strong light and some magnification, inspect
> the ITE8718F in the corner.
>
> (upper right hand corner of the picture here)http://h10025.www1.hp.com/ewfrf/wc/genericDocument?docname=c00864922&...

Yeah I have looked at the ITE chip already, it has like hundreds of
little L shaded legs, i cannot tell if they are soldered on correctly
or not, it has been fine for about 6 or 8 months, been using the
Pentium D for 5 of those, does this chip control CPU voltages as well,
or is it only fan speeds and temperature sensors?

If it is broken, I suppose the only solution would be a new
motherboard, right?
From: AdenOne on 31 Jan 2008 21:30
Would flashing the bios with the current version help, or would it not
flash as it is already the current version? I cant believe how out of
range the voltages are, I mean 16v for the +12v lines, this is way
over spec - unless the ITE chip is faulty and not sensing them
correctly - because the PC works fine, no crashes or hangs, even with
the voltages reported as so out of range. Makes me think, it must be
the ITE chip - as I said, I wonder what all the ITE chip does actually.
From: AdenOne on 31 Jan 2008 22:18
Well - I removed all AC power, unclipped the mobo battery, and left it
for about 30 mins, reseated the battery, connected the AC and now all
of a sudden everything is all fine again, reading the CPU temp
correctly, voltages are back to normal, fans are fine, very strange, I
think I will do a full backup though just in case it goes again.
From: Paul on 1 Feb 2008 00:37
AdenOne wrote:
> Well - I removed all AC power, unclipped the mobo battery, and left it
> for about 30 mins, reseated the battery, connected the AC and now all
> of a sudden everything is all fine again, reading the CPU temp
> correctly, voltages are back to normal, fans are fine, very strange, I
> think I will do a full backup though just in case it goes again.

I don't see how the two are related. (CMOS battery versus misbehaving
SuperI/O chip hardware monitor.) Just another mystery to ponder :-)

There is an electrical connection between the battery and the hardware monitor.
The VBAT pin on the SuperI/O, provides the ability for the SuperI/O
to measure the CMOS battery voltage. But that isn't typically
shown in hardware monitoring programs. And I don't see a good
mechanism, for it to upset things.

I think portions of the CMOS memory have checksum protection. A
checksum is not bulletproof, but if there was a problem with the
data contained in the CMOS memory, you might see an error message
during the BIOS POST.

So what we know, is the battery removal fixed it, but as yet, no
plausible theory as to how the battery can upset the chip.

Does the CMOS battery run down and need frequent replacement ?

Does the computer lose its BIOS settings (other than when you remove
the battery) ?

Paul
From: AdenOne on 1 Feb 2008 00:42
On Jan 31, 5:37 pm, Paul <nos...(a)needed.com> wrote:
> AdenOne wrote:
> > Well - I removed all AC power, unclipped the mobo battery, and left it
> > for about 30 mins, reseated the battery, connected the AC and now all
> > of a sudden everything is all fine again, reading the CPU temp
> > correctly, voltages are back to normal, fans are fine, very strange, I
> > think I will do a full backup though just in case it goes again.
>
> I don't see how the two are related. (CMOS battery versus misbehaving
> SuperI/O chip hardware monitor.) Just another mystery to ponder :-)
>
> There is an electrical connection between the battery and the hardware monitor.
> The VBAT pin on the SuperI/O, provides the ability for the SuperI/O
> to measure the CMOS battery voltage. But that isn't typically
> shown in hardware monitoring programs. And I don't see a good
> mechanism, for it to upset things.
>
> I think portions of the CMOS memory have checksum protection. A
> checksum is not bulletproof, but if there was a problem with the
> data contained in the CMOS memory, you might see an error message
> during the BIOS POST.
>
> So what we know, is the battery removal fixed it, but as yet, no
> plausible theory as to how the battery can upset the chip.
>
> Does the CMOS battery run down and need frequent replacement ?
>
> Does the computer lose its BIOS settings (other than when you remove
> the battery) ?
>
> Paul

No. It is less than a year old, has a July 2007 BIOS, battery is fine,
the only thing I can think of is that SpeedFan v4.33 upset the CMOS
settings somehow - I did not fiddle with voltages or anything, only
the fan speed settings. I tried using the CMOS_CLR jumper, but it did
not work, only by removing the battery and leaving for a while did it
work.
 |  Next  |  Last
Pages: 1 2 3
Prev: Big problem - CPU says it is -128 degrees!
Next: 4-in-1, 6-in-1 ink economy