On Mar 28, 7:08 am, "Wizard" <billy_...@yahoo.com> wrote:
> My pc halts with no response randomly and these are the symptoms:
> 1) Sometimes I press the power button, I can hear the cpu and power
> fans, but then it does nothing, the monitor doesn't start, the hard
> disk doesn't start, it just stays there. After a couple of reboots, it
> starts normally.
> 2) Sometimes the monitor starts, but the "detecting drives" stage
> doesn't come at all, it just stays there.
> 3) Sometimes it halts during the windows loading logo screen.
> 4) Sometimes it halts while I'm using windows and when I restart it,
> it gives me the first symptom.

Notice a long list of 'could be's. This post is about where to
start eliminating the 'could be's. One item that can make
everything else look defective is the power supply 'system' - more
than just a power supply. Two minutes with a 3.5 digit multimeter
will exonerate or identify the suspect. Without disconnecting or
changing anything, and in two minutes, the procedure is in "When your
computer dies without warning....." starting 6 Feb 2007 in the
newsgroup alt.windows-xp at:
http://tinyurl.com/yvf9vh

Voltage could have been defective for a long time; but only just now
causing failures. See the failure decisively or confirm its
integrity. Then don't look back. Move on to other suspects or
confirm a new power supply solves the problem, again, in two minutes
with the meter. Get decisive answers as each suspect is accused or
exonerated.