Re: computer keeps crashing
- From: w_tom <w_tom1@xxxxxxx>
- Date: Mon, 24 Sep 2007 09:43:21 -0700
I don't have the spec numbers for your processor. However you take
that number. That is the temperature it can be at when the room is at
100 degrees F. So subtract 20 degrees C from that number. That is
the temperature the CPU must be at in a 70 degree room. What is the
max temperature of your CPU? 70 degrees? Then CPU must not fail at
58 degrees. IOW that is a hardware failure.
Selecting heatsink assemblies starts by doing calculations. You
should know from CPU specs its average power consumption (in watts).
Heatsink manufacturer (if he is honest) must provide the 'degree C per
watt' number. Now you know the temperature difference between
exterior air and CPU. Does the heatsink perform according to its
'degree C per watt' calculations? Is the heatsink really sufficient?
We solve problems by doing the numbers (the hypothesis) and then
confirming those numbers with the experiment. Some reasons for higher
heat are bad heatsink surfaces (which is why thermal compound is
necessary) or excessive thermal compound. Too much is bad. Too
little causes no problem are a properly machined heatsink.
The only time dust is a problem is when dust completely obstructs
airflow. Heatsink designs must include dust coatings. And if dust is
so massive as to close the heatsink, then computer chassis is moving
too much air or computer is being used in an industrial environment -
heavy dust settles daily on everything.
I do not see where you performed comprehensive hardware diagnostics
using heat (the hairdryer). Effective diagnostics execute without
Windows even loaded. If your computer manufacturer is not
responsible, then you must obtain third party diagnostics or
diagnostics from each component manufacturer. One popular memory
diagnostic is Memtst86. Each diagnostic is executed at room temperate
AND at elevated temperatures.
I also do not see where voltages are confirmed - that two minute
procedure defined above at http://tinyurl.com/yvf9vh . Expect
temperature related failures to occur if voltage integrity is not
confirmed. It was not a suggestion. It was a very strongest
recommendation. Your symptoms such as running for two month OK are
typical of a computer that has always had voltage problems.
On Sep 24, 4:20 am, "E.T." <ha101...@xxxxxxxxxx> wrote:
Ok folks, followed some of the advice in this group and tried
testing one at a time my 2 dual shared kingston hyperx DDR2 512mb mem
sticks. On stick#1 game application ran for like 2 hours without
bluescreening (disabled WinXp "restart" on error or crash) Also, both
applications (spybot1.4 & Avast antivirus) which seemed to
mysteriously stop running about 60% thru scans, finally finnished
their assesment with stick#1.
Stick#2 ran for about 3 hours before bluescreening. Applications
also finnished scans with this stick.
Also tried both sticks and followed "w_tom" advice on using a hair
dryer.(thanks tom, never even thought of it,but it makes sense)
pointed it at both sticks and ran "spybot1.4" and once again the
program stopped at about 60% scan. However....also ran cpu program
"fox one" and noticed that cpu was slowly rising from 48C to 58C. Im
assuming that the heat from the hair dryer was reflecting off of
motherboard and somewhat heated the cpu. It held at 58C for about 2
minutes and thats when "spybot1.4 failed at 60%
Since I couldnt tell whether it was the mem sticks or the cpu temp
that was causing the errors/bluescreens I downloaded a program called
"Stress Prime 2004" Ran the program for a FFT cpu only test and the
program detected a hardware failure at only 19 minutes. During this
test and time the cpu temps slowly rose from 48C to 58C. Id say that
it reached 58C at around 15 to16 minutes. Could this be a sign that
the cpu is not being cooled properly. I do have a thermaltake blue orb
II on it, but now Im begining to wonder if this cooler is sufficient.
Also....could a small layer of dust on the heatsink cooler make a
difference? Im assuming this since the computer ran for 2 months ok
then in June it started crashing only on gaming.
Ed
.
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