CPU Voltage sometimes dips to zero for a very short period

 

Hi Experts,

I have a box where the CPU voltage sometimes dips to zero for a few secs
and then returns to the normal of 1.5v.

Has anyone seen this situation before? I am thinking of removing the CPU
and the local electrical connections around it and re-installing them.
The board is Intel and I have the Intel monitor for temperature and
voltage running.

Suggestions appreciated.

JD

 

JD wrote:

If for whatever reason, your power supply was faulty and the voltage
dipped to zero...reinstalling the CPU would hardly solve the problem...

however I suspect there is a problem with your monitoring...
for if the CPU voltage actually dropped to zero your machine would of
course cease to operate!

 

JD wrote:

You don't actually say if the computer continues to work during these "zero
voltage" periods. There is no guarantee that the monitoring software is
telling you the truth, especially if something else on the computer is
interfering with it or preventing it from updating for a short period. The
fact that you "see" zero volts displayed from software running on the
computer certainly suggests that the computer does indeed continue
operating, something it could never do with no power going into it. At the
very least there would be an immediate crash (and probably a reboot) if the
power was dropped for even an instant.

--
John McGaw
[Knoxville, TN, USA]
http://johnmcgaw.com

 

John McGaw wrote:

Thanks Philo and John.

I was too concerned to check if the computer was working. All other
voltage meters in the Intel monitor did not flicker to any extent but
the CPU meter did hit zero a few times from 1.5v for a fraction of a
second. On at least one occasion the CPU voltage flickered to zero while
the other meters stayed steady. I didn't hang around long enough to
decide if any damage was done. I just shut down. I have never seen this
happen in a computer up to now.

 

JD wrote:

I suspect the problem is with the voltage monitor. as if the voltage on
your CPU dropped to zero...your machine would cease to function.

Now, if you are having power problems, the I'd suspect the power supply
itself or perhaps it's connection to the mobo