Re: Computer reboots spontaneously
- From: happymac.support@xxxxxxxxx
- Date: Fri, 27 Jul 2007 13:41:28 -0700
On Jul 19, 5:26 pm, w_tom <w_t...@xxxxxxx> wrote:
As Detlev Dreyer noted, what does the system (event) log report?
IOW don't try to fix anything. First discover what is defective.
First collect facts. Also review the Device Manager. Use Windows
Help, if necessary, to find these useful reports.
If a computer manufacturer is more responsible, then comprehensive
diagnostics would be on disk and on manufacturer's web site. If not,
then you must download diagnostics for each component from the various
component manufacturers or third parties- much more work.
List of items that will crash an XP system is smaller. For example,
disk drive will not reboot a computer. A hardware created problem
means suspects are sound card, processor, memory, video controller and
power supply 'system'. Power supply is only one component of a power
supply 'system'.
Dust is clearly not in your list of suspects. However heat is a
diagnostic tool. Operate that computer in a 100 degree F room. It
should not change its operation. But marginal hardware tends to fail
more frequently (especially when running diagnostics) when heated. We
don't fix that failure with more cooling or removing dust. We replace
100% defective hardware that works normally in a 70 degree room but
fails intermittently in 100 degrees F. Don't cure this symptom with
more fans.
Another suggested a virus. That is but one on a long list of
possibilities. However we typically don't fix software when hardware
is unknown and suspect. First (usually) confirm hardware integrity.
Apparently BIOS has a voltage monitor. Those four voltage numbers
are questionable until first calibrated using a 3.5 digit multimeter.
Voltages that drop below 3.23, 4.87, or 11.7 suggests a problematic
power supply 'system'.
On Jul 16, 4:30 pm, "Walter R." <we...@xxxxxxxxxxx> wrote:
I am running win xp sp2. Computer is about 5 years old. 40 GB WD and 512 MB
RAM. Everything was working fine.
Starting this morning, and at intervals of about one hour, my computer makes
a short buzzing sound, the screen goes dead, and the computer then reboots.
When it reboots, it does not show the blue screen, asking for a disk check.
Normally it asks for a disk check when the power is interrupted like this.
The status report on the hard drives shows OK when the computer boots.
I checked the temperature in the BIOS and it looks OK: CPU 40C/104F, System
34/93, fan speed holding steady with slight speed variations.
What diagnostics can I run? What can cause this problem.
w_tom
You are correct about the heat. My pentium d 830 computer was and the
70-80 degrees CELSIUS level. It was extremely unstable and yes, it
also rebooted spontaneously when at higher loads. Cleaning out the
dust worked for me though, it reduced the temp by 20C and the computer
was more stable and fast. My computer was operating at a 20C room at
the time (68F for your American folks) and dust still bogged it down.
.
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- From: Walter R.
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- From: w_tom
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