"Victor Acuña" wrote:
> Hi!, Guys:
> My computer itself do a shutdown without any warning notice since a
> some time (and it seems like each time does it faster). I opened
> its case and visually check everything and I have failed to see
> nothing rare. I found this, when you are working in the BIOS
> Setup's screen or in DOS with a diskette, it does not go off .
> It has damaged my WinXP and I need to recover the registry files
> (I can't do it yet, because the random powerdown).
> Then I put another disk that I have, and installed a Win98 in it,
> all O.K., I was able to install it, but when I began to utilize it,
> the machine turn off itself again. This happen in a short time,
> when I try to do any operation (open files, see disks, etc.)
> And now when I start the Win98, as soon as I want to do something,
> it shut off. I short-circuited the power-on supply's cable so that
> when the problem happens the supply not go off, although the
> motherboard does it and let everything in black. The health screen
> in the setup show normal values in voltages and the temperature of
> the CPU (a Celeron 1.8GHz) does not touch the 50 ºC. The machine has
> a main board Shuttle AB45 with chips i845 and 128 DDR RAM. As I am
> at work in isolating the problem, what I want to know is if somebody
> can give me any idea to know what can be happening or for where go
> trying .
> Sincerely,
> Victor
> PS: And please, apologize my English

"w_tom" <w_t***@hotmail.com> escribió en el mensaje
news:422A5746.8F0A11E3@hotmail.com...
>   Using the information provided, no one can tell you what is
> wrong.  However, that information tells us where to next get
> facts.  Unfortunately you tried to fix things (ie. install the
> so grossly unreliable Windows 98) and have therefore destroyed
> valuable facts.  Never just wildly fix something only on
> speculation. Fix something because we know that is the
> problem.  If we don't know what is wrong, then we keep
> collecting facts.
>
>  How to get more important information.  First, facts that
> could have provided details in Windows XP.  What does the
> system (event) log report?  This log has details - with
> numbers because numbers are always necessary - on previous
> events.  Including events that could have been warning you of
> impending failure before that failure happened.  Also what did
> Device Manager report?
>
>  All responsible computer manufacturers provide comprehensive
> hardware diagnostics, for free, on their web site and
> sometimes on the hard disk.  This is hardware testing without
> the complication of Windows.  Notice, again, the principle.
> First we break a problem down into component parts.  Then we
> verify integrity of those component parts.  If your computer
> manufacturer is an irresponsible type, then you must download
> individual diagnostics from each component manufacturer.
>
>  Of course, we always start with an analysis of the
> foundation.  One never fixes anything in a house without first
> verifying the integrity of that foundation.  In a computer,
> the foundation is a power supply 'system'.  A 'system' is not
> just a power supply.  The other tool as essential as the
> screwdriver is a 3.5 digit multimeter.  Your eyes are mostly
> useless without that meter.  Your eyes cannot see electrons.
> Solution always starts with numbers.  Some of the important
> voltage levels will be on signals called Power Good and Power
> On.  What do those signal do just as power is turned on AND
> after power has been applied?  Essential information if you
> want useful responses here from the better informed lurkers.
>
>  Procedure to get those essential numbers as well as an
> introduction as to how that power supply 'system' works:
> "Computer doesnt start at all" in   alt.comp.hardware on 10
> Jan 2004   at
>  http://tinyurl.com/2t69q
> "I think my power supply is dead"  in alt.comp.hardware  on 5
> Feb 2004 at
>   http://www.tinyurl.com/2musa
>
>  OK. You don't know what those numbers mean?.  No problem.
> You have just provided facts necessary for a reply that does
> not wildly speculate.  Any post that says replace the power
> supply is only wild speculation.
>
> "Victor Acuña" wrote:
>> Hi!, Guys:
>> My computer itself do a shutdown without any warning notice since a
>> some time (and it seems like each time does it faster). I opened
>> its case and visually check everything and I have failed to see
>> nothing rare. I found this, when you are working in the BIOS
>> Setup's screen or in DOS with a diskette, it does not go off .
>> It has damaged my WinXP and I need to recover the registry files
>> (I can't do it yet, because the random powerdown).
>> Then I put another disk that I have, and installed a Win98 in it,
>> all O.K., I was able to install it, but when I began to utilize it,
>> the machine turn off itself again. This happen in a short time,
>> when I try to do any operation (open files, see disks, etc.)
>> And now when I start the Win98, as soon as I want to do something,
>> it shut off. I short-circuited the power-on supply's cable so that
>> when the problem happens the supply not go off, although the
>> motherboard does it and let everything in black. The health screen
>> in the setup show normal values in voltages and the temperature of
>> the CPU (a Celeron 1.8GHz) does not touch the 50 ºC. The machine has
>> a main board Shuttle AB45 with chips i845 and 128 DDR RAM. As I am
>> at work in isolating the problem, what I want to know is if somebody
>> can give me any idea to know what can be happening or for where go
>> trying .
>> Sincerely,
>> Victor
>> PS: And please, apologize my English