Computer stops right at boot

"jbrandonbb@gmail.com" <johnmbrandon.RemoveThis@gmail.com> wrote in message
news:d5c6c963-b320-44be-b7bd-20c9113a793b@v67g2000hse.googlegroups.com...
>I am building a Penryn 9650 system with the Asus PK5 Deluxe
> motherboard. I have a 500 watt PSU, ThermalTake Silent 775D hs/fan,
> pretty standard equipment otherwise. What's happening is the computer
> boots momentarily, and then the CPU shuts off. After a few seconds,
> the CPU fires up again and then shuts down again. Any ideas as to why
> this would happen?
>
> - JB

First bet would be a faulty power supply.


Ed
 >> Stay informed about: Computer stops right at boot 

On Jan 12, 6:04 am, "Ed Medlin" <e....RemoveThis@edmedlin.com> wrote:
> "jbrando...@gmail.com" <johnmbran....RemoveThis@gmail.com> wrote in message
>
> news:d5c6c963-b320-44be-b7bd-20c9113a793b@v67g2000hse.googlegroups.com...
>
> >I am building a Penryn 9650 system with the Asus PK5 Deluxe
> > motherboard. I have a 500 watt PSU, ThermalTake Silent 775D hs/fan,
> > pretty standard equipment otherwise. What's happening is the computer
> > boots momentarily, and then the CPU shuts off. After a few seconds,
> > the CPU fires up again and then shuts down again. Any ideas as to why
> > this would happen?
>
> > - JB
>
> First bet would be a faulty power supply.
>
> Ed

I have tried two, one was 380 and this one is 500. Do I need higher?
 >> Stay informed about: Computer stops right at boot 

On Jan 11, 6:43 pm, "Dave" <no....DeleteThis@nohow.not> wrote:
> "jbrando...@gmail.com" <johnmbran....DeleteThis@gmail.com> wrote in message
>
> news:d5c6c963-b320-44be-b7bd-20c9113a793b@v67g2000hse.googlegroups.com...
>
> >I am building a Penryn 9650 system with the Asus PK5 Deluxe
> > motherboard. I have a 500 watt PSU, ThermalTake Silent 775D hs/fan,
> > pretty standard equipment otherwise. What's happening is the computer
> > boots momentarily, and then the CPU shuts off. After a few seconds,
> > the CPU fires up again and then shuts down again. Any ideas as to why
> > this would happen?
>
> > - JB
>
> Interesting question. How do you know that the CPU fires up again and then
> shuts down again? I've never seen a CPU with any kind of built-in activity
> indicator, like LED lights or anything. I'm not being sarcastic, I need you
> to better define your terms so I know what the heck you are talking about.
>
> Are you guessing by fan activity that the CPU is on and off? Are you
> guessing by lights on the mainboard that the CPU is on and off?
>
> Don't say what you think is happening, post exactly what IS happening, so
> that we can help you.
>
> Start with the power switch. Push that momentarily to turn system on. Fans
> spin? Beep code from mainboard? Any lights on anywhere? Hear hard drive
> spinning up? What is displayed on monitor, if anything? Details!!! -Dave

The fans spin up fine, no beep codes, lights on (mainboard and
chassis). The HDD does not spin as far as I can tell. There is nothing
on the video but I have it hooked up correctly. Does the CPU need a
more powerful fan combo? Is it not seated correctly somehow? Do i need
a bigger PSU than 500?
 >> Stay informed about: Computer stops right at boot 

jbrandonbb RemoveThis @gmail.com wrote:

> On Jan 11, 6:43 pm, "Dave" <no... RemoveThis @nohow.not> wrote:
>> "jbrando...@gmail.com" <johnmbran... RemoveThis @gmail.com> wrote in message

>> >I am building a Penryn 9650 system

Apparently that "Penryn 9650" is a CPU. Make sure the Asus PK5
mainboard supports it. You could try a BIOS update.

>> > boots momentarily, and then the CPU shuts off. After a few
>> > seconds, the CPU fires up again and then shuts down again.
>> > - JB

>> Interesting question. How do you know that the CPU fires up
>> again and then shuts down again?

He's a Google Groups user.

>> Are you guessing by fan activity that the CPU is on and off? Are
>> you guessing by lights on the mainboard that the CPU is on and
>> off?
>>
>> Don't say what you think is happening, post exactly what IS
>> happening, so that we can help you.

> The fans spin up fine, no beep codes, lights on (mainboard and
> chassis).

How do you know the CPU is on and off?

> The HDD does not spin as far as I can tell. There is nothing on
> the video but I have it hooked up correctly.

Once again, that's what you think. What video card? Have you
attached the secondary power connector that comes through a power
supply cable to the video card?

> Does the CPU need a more powerful fan combo? Is it not seated
> correctly somehow?

Only you can answer that.

> Do i need a bigger PSU than 500?

Whatever "bigger" means. That figure "500" is almost meaningless.
Just like everything else, there can be a huge difference in quality
between one unit and another, regardless of the alleged wattage
rating.
 >> Stay informed about: Computer stops right at boot 

> >> > boots momentarily, and then the CPU shuts off. After a few
> >> > seconds, the CPU fires up again and then shuts down again.
> >> > - JB
> >> Interesting question. How do you know that the CPU fires up
> >> again and then shuts down again?
>
> He's a Google Groups user.

And proud of it. It means I can use any PC, it logs me in
automatically, has good spell check, etc. Is there a requirement here
about which newsreader you use?

>
> >> Are you guessing by fan activity that the CPU is on and off? Are
> >> you guessing by lights on the mainboard that the CPU is on and
>
> How do you know the CPU is on and off?

How else would you know? The fan turns on, it has power.

>
> > The HDD does not spin as far as I can tell. There is nothing on
> > the video but I have it hooked up correctly.
>
> Once again, that's what you think. What video card? Have you
> attached the secondary power connector that comes through a power
> supply cable to the video card?

It is not a matter of what I think when it comes to the video signal.
There is nothing on the screen. If I had not attached power, there
would be a long piercing tone.

>
> > Does the CPU need a more powerful fan combo? Is it not seated
> > correctly somehow?
>
> Only you can answer that.

Not really -- it can be answered if you know the specs for the
mainboard I mentioned and its requirements for power, which must be
available somewhere but I have not been able to find it yet.

>
> > Do i need a bigger PSU than 500?
>
> Whatever "bigger" means. That figure "500" is almost meaningless.
> Just like everything else, there can be a huge difference in quality
> between one unit and another, regardless of the alleged wattage
> rating.

Most people know that bigger means more powerful -- higher wattage.
Most people know that the 500 is a wattage rating, it is far from
almost meaningless. I can't think of a single thing in your post that
was helpful in any way.
 >> Stay informed about: Computer stops right at boot 

>
> I am using a Seasonic SS700HM - an 80-Plus unit that says 500 watts. I
> had a 380watt PSU I was trying before. Both of these worked fine with
> an AMD 4000+ CPU on another build. By the way, how do you flash the
> BIOS -- do you need the video signal and HDDD working for that?
> Anyway, thanks for your help. It sounds like I should first try a more
> powerful and better CPU.

OK, we can assume that the power supply is probably OK. To flash the BIOS,
you don't need a hard drive, but you do need video. The question is moot
anyway. If you could get the system running well enough to flash the BIOS,
you probably would not need to flash the BIOS. Triple-check that your CPU
is compatible with your mainboard. -Dave
 >> Stay informed about: Computer stops right at boot 

>
> powerful and better PSU, I meant.

No, a Seasonic 500W should power just about anything. I'd be shocked if
that is your problem. -Dave
 >> Stay informed about: Computer stops right at boot 

jbrandonbb gmail.com wrote:

> [Using Google Groups] means I can use any PC, it logs me in
> automatically, has good spell check, etc.

I use speech for dictation and much of command/control. Don't make
no spelling errors no more.

> Is there a requirement here about which newsreader you use?

Google Groups is the spam portal to USENET, and it's used by most
trolls and especially by nym shifting trolls. Besides all of the
spam and trolling, the fact that it's so easy for you and others to
post through Google Groups unfortunately means those with little or
no technical skill are attracted to USENET groups. Some users used
to complain about that, those users should be pulling their hair out
by now thanks to Google Groups.

Of course nobody knows everything and USENET is the place to ask,
but you benefit by asking skillfully and at least honestly.

>> >> Are you guessing by fan activity that the CPU is on and off?
>> >> Are you guessing by lights on the mainboard that the CPU is on
>> >> and
>>
>> How do you know the CPU is on and off?
>
> How else would you know?

My mainboard has diagnostic LEDs.

> The fan turns on,

That's no way to tell.

> it has power.

How can you tell the CPU has power? By the way, besides the video
card, sometimes the CPU requires a cable connection from the power
supply.

>> What video card? Have you attached the secondary power connector
>> that comes through a power supply cable to the video card?

Answer those questions.

>> > Does the CPU need a more powerful fan combo? Is it not seated
>> > correctly somehow?
>>
>> Only you can answer that.
>
> Not really --

Only you can answer whether the heatsink is seated properly.

>> > Do i need a bigger PSU than 500?
>>
>> Whatever "bigger" means. That figure "500" is almost meaningless.
>> Just like everything else, there can be a huge difference in
>> quality between one unit and another, regardless of the alleged
>> wattage rating.
>
> Most people know that bigger means more powerful -- higher
> wattage.

Wattage ratings alone are nearly meaningless.

> I can't think of a single thing in your post that was helpful in
> any way.

Then you won't be flashing the BIOS? Maybe you shouldn't anyway. You
need on the spot technical help IMO. You get what you pay for.

Good luck.











>
>
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> From: jbrandonbb gmail.com
> Newsgroups: alt.comp.hardware.pc-homebuilt
> Subject: Re: Computer stops right at boot
> Date: Sat, 12 Jan 2008 13:05:05 -0800 (PST)
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>
 >> Stay informed about: Computer stops right at boot 

On Jan 12, 9:54 pm, "jbrando...@gmail.com" <johnmbran....DeleteThis@gmail.com>
wrote:
> Is it okay to replace the CPU after I have installed the fan combo and
> used the grease? I have another Intel chip I could use. I wish there
> was another way to flash the BIOS besides using a floppy...

Why are you fixing things when you have no reason to believe a
defect exists there? Worse, is loading (flashing) a new BIOS when
hardware is unstable? An easy way to permanently destroy the
motherboard.

You are fixing things rather than first learning what is wrong. For
example, if a power supply spins it fans, then power exists. But is
power sufficient? Unknown. Fans can spin and power supply is still
defective.

Then you are trying to fix the power supply as if that was the
entire power supply system. It is not. IOW stop trying to fix
things. That comes later. First learn what is defective.

Central to your symptoms is the power supply controller. That means
you learn every input and output going to that function. And that
means those numbers posted here result in definitive replies from
those with better knowledge. Currently every post is wild speculation
- 'it could be this or could be that or... ' wasted time.

What is the power supply system doing? A two minute procedure
defines that in numbers in "When your computer dies without
warning....." starting 6 Feb 2007 in the newsgroup alt.windows-xp
at:
http://tinyurl.com/yvf9vh
Connector chart for where each color wire should be located:
http://www.hardwarebook.net/connector/power/atxpower.html

In your case, most important are numbers as and in seconds after the
power switch is pressed on any one of green, gray, red, orange, and
yellow wires.

Also not described in that procedure but relevant to your problem
are voltages between pins that the power switch connects to; both
before and when power switch is pressed. Any answer that says it is
OK is wasted time. Critically important are numeric values. Your
replies will only be as useful as information you post.

Even swapping power supply accomplished nothing. For example, after
replacing power supply, list the components you know are good or bad.
Why is that list still empty? Because after all that work, nothing
was accomplished. But then that is also a problem created by those
who say, "it might be this or might be that or might be ... ". Wild
speculation accomplishes nothing. Above two minute procedure is how
to start knowing what is - also called accomplishment.

Never flash a BIOS when hardware is unknown or unstable. BIOS code
has no relationship to your problem. Reflashing the BIOS is
recommended by those who use wild speculation - who do not know how
hardware works; therefore recommend replacing anything using wild
speculation. Flash the BIOS if willing to risk or permanently damage
the motherboard.

Get and post those numbers using a two minute procedure. Stop the
wild speculation.
 >> Stay informed about: Computer stops right at boot 

On Jan 12, 9:54 pm, "jbrando...@gmail.com" <johnmbran....DeleteThis@gmail.com>
wrote:
> Is it okay to replace the CPU after I have installed the fan combo and
> used the grease? I have another Intel chip I could use. I wish there
> was another way to flash the BIOS besides using a floppy...

Why are you fixing things when you have no reason to believe a
defect exists there? Worse, is loading (flashing) a new BIOS when
hardware is unstable? An easy way to permanently destroy the
motherboard.

You are fixing things rather than first learning what is wrong. For
example, if a power supply spins it fans, then power exists. But is
power sufficient? Unknown. Fans can spin and power supply is still
defective.

Then you are trying to fix the power supply as if that was the
entire power supply system. It is not. IOW stop trying to fix
things. That comes later. First learn what is defective.

Central to your symptoms is the power supply controller. That means
you learn every input and output going to that function. And that
means those numbers posted here result in definitive replies from
those with better knowledge. Currently every post is wild speculation
- 'it could be this or could be that or... ' wasted time.

What is the power supply system doing? A two minute procedure
defines that in numbers in "When your computer dies without
warning....." starting 6 Feb 2007 in the newsgroup alt.windows-xp
at:
http://tinyurl.com/yvf9vh
Connector chart for where each color wire should be located:
http://www.hardwarebook.net/connector/power/atxpower.html

In your case, most important are numbers as and in seconds after the
power switch is pressed on any one of green, gray, red, orange, and
yellow wires.

Also not described in that procedure but relevant to your problem
are voltages between pins that the power switch connects to; both
before and when power switch is pressed. Any answer that says it is
OK is wasted time. Critically important are numeric values. Your
replies will only be as useful as information you post.

Even swapping power supply accomplished nothing. For example, after
replacing power supply, list the components you know are good or bad.
Why is that list still empty? Because after all that work, nothing
was accomplished. But then that is also a problem created by those
who say, "it might be this or might be that or might be ... ". Wild
speculation accomplishes nothing. Above two minute procedure is how
to start knowing what is - also called accomplishment.

Never flash a BIOS when hardware is unknown or unstable. BIOS code
has no relationship to your problem. Reflashing the BIOS is
recommended by those who use wild speculation - who do not know how
hardware works; therefore recommend replacing anything using wild
speculation. Flash the BIOS if willing to risk or permanently damage
the motherboard.

Get and post those numbers using a two minute procedure. Stop the
wild speculation.
 >> Stay informed about: Computer stops right at boot 

>> Whatever "bigger" means. That figure "500" is almost meaningless.
>> Just like everything else, there can be a huge difference in quality
>> between one unit and another, regardless of the alleged wattage
>> rating.
>
> Most people know that bigger means more powerful -- higher wattage.
> Most people know that the 500 is a wattage rating, it is far from
> almost meaningless. I can't think of a single thing in your post that
> was helpful in any way.

It is a very helpful post. All power supplies are NOT equal. I can show you
"500w" PSUs that would not start an E-Machine (commonly use 200w PSUs).
There are so many bogus companies out there rating a 300w power supply at
500w because it's startup power is somewhere in that region. Are you SURE
that both of your PSUs are good and putting out the correct voltages? Do you
even know what brand they are? I have been building systems for many years
and with your problem my first act would be to try a KNOWN good power
supply. If you don't have a known good one around, then you need a
multimeter and do a google for troubleshooting power supplies and you will
find a number of places to help you out. John Doe is actually very correct
in saying that 500w is just a number without knowing what the quality of
your PSU is.


Ed
 >> Stay informed about: Computer stops right at boot 

On Jan 13, 9:51 am, "Ed Medlin" <e... RemoveThis @edmedlin.com> wrote:
>
> It is a very helpful post. All power supplies are NOT equal. I can show you
> "500w" PSUs that would not start an E-Machine (commonly use 200w PSUs).
> There are so many bogus companies out there rating a 300w power supply at
> 500w because it's startup power is somewhere in that region. Are you SURE
> that both of your PSUs are good and putting out the correct voltages? Do you
> even know what brand they are? I have been building systems for many years
> and with your problem my first act would be to try a KNOWN good power
> supply. If you don't have a known good one around, then you need a
> multimeter and do a google for troubleshooting power supplies and you will
> find a number of places to help you out. John Doe is actually very correct
> in saying that 500w is just a number without knowing what the quality of
> your PSU is.
>
> Ed

As I posted before, both PSUs work fine in other systems.
 >> Stay informed about: Computer stops right at boot 

On Jan 13, 7:51 am, w_tom <w_t....DeleteThis@usa.net> wrote:
> On Jan 12, 9:54 pm, "jbrando...@gmail.com" <johnmbran....DeleteThis@gmail.com>
> wrote:
>
> > Is it okay to replace the CPU after I have installed the fan combo and
> > used the grease? I have another Intel chip I could use. I wish there
> > was another way to flash the BIOS besides using a floppy...
>
> Why are you fixing things when you have no reason to believe a
> defect exists there? Worse, is loading (flashing) a new BIOS when
> hardware is unstable? An easy way to permanently destroy the
> motherboard.
>
> You are fixing things rather than first learning what is wrong. For
> example, if a power supply spins it fans, then power exists. But is
> power sufficient? Unknown. Fans can spin and power supply is still
> defective.
>
> Then you are trying to fix the power supply as if that was the
> entire power supply system. It is not. IOW stop trying to fix
> things. That comes later. First learn what is defective.
>
> Central to your symptoms is the power supply controller. That means
> you learn every input and output going to that function. And that
> means those numbers posted here result in definitive replies from
> those with better knowledge. Currently every post is wild speculation
> - 'it could be this or could be that or... ' wasted time.
>
> What is the power supply system doing? A two minute procedure
> defines that in numbers in "When your computer dies without
> warning....." starting 6 Feb 2007 in the newsgroup alt.windows-xp
> at:
> http://tinyurl.com/yvf9vh
> Connector chart for where each color wire should be located:
> http://www.hardwarebook.net/connector/power/atxpower.html
>
> In your case, most important are numbers as and in seconds after the
> power switch is pressed on any one of green, gray, red, orange, and
> yellow wires.
>
> Also not described in that procedure but relevant to your problem
> are voltages between pins that the power switch connects to; both
> before and when power switch is pressed. Any answer that says it is
> OK is wasted time. Critically important are numeric values. Your
> replies will only be as useful as information you post.
>
> Even swapping power supply accomplished nothing. For example, after
> replacing power supply, list the components you know are good or bad.
> Why is that list still empty? Because after all that work, nothing
> was accomplished. But then that is also a problem created by those
> who say, "it might be this or might be that or might be ... ". Wild
> speculation accomplishes nothing. Above two minute procedure is how
> to start knowing what is - also called accomplishment.
>
> Never flash a BIOS when hardware is unknown or unstable. BIOS code
> has no relationship to your problem. Reflashing the BIOS is
> recommended by those who use wild speculation - who do not know how
> hardware works; therefore recommend replacing anything using wild
> speculation. Flash the BIOS if willing to risk or permanently damage
> the motherboard.
>
> Get and post those numbers using a two minute procedure. Stop the
> wild speculation.

I am pretty sure your entire post could have been summarized in about
one or two sentences.
 >> Stay informed about: Computer stops right at boot