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PC won't power on

 
 
John Holmes
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      03-13-2007
alice "contributed" in 24hoursupport.helpdesk:

> I just opened up my PC case to take off the CPU fan and heatsink,
> cleaned it, put it back on, and now the whole thing will not power on.
> The power light comes on for about 5 seconds, and the CPU fan starts
> to spin, then it just turns off.
> The reason I cleaned the fan in the first place is because the machine
> was overheating and randomly turning off frequently.
> Is there any thing I can do at this point, and if I need to replace
> parts, what should I start with?
>


Reseat your AGP video card.

--
Your mother was a gap-teethed harpy who wore bizarre clothes in a home
for the permanently baffled.

 
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Dan Glybitz
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      03-13-2007

"alice" <> wrote in message
news: oups.com...
>I just opened up my PC case to take off the CPU fan and heatsink,
> cleaned it, put it back on, and now the whole thing will not power on.
> The power light comes on for about 5 seconds, and the CPU fan starts
> to spin, then it just turns off.
> The reason I cleaned the fan in the first place is because the machine
> was overheating and randomly turning off frequently.
> Is there any thing I can do at this point, and if I need to replace
> parts, what should I start with?
>

I had the same thing happen recently, powers on for a few seconds then
nothing. Try unplugging your boot drive and see if it powers on more than 5
seconds. I think that's whats wrong with mine at the moment. Haven't got
around to fixing it yet, bought a new pc instead lol (The other one was 6
years old, prolly time for an upgrade anyway).
DG.


 
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alice
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      03-13-2007
On Mar 13, 2:52 pm, John Holmes <nospam.13i...@gmail.com> wrote:
> alice "contributed" in 24hoursupport.helpdesk:
>
> > I just opened up my PC case to take off the CPU fan and heatsink,
> > cleaned it, put it back on, and now the whole thing will not power on.
> > The power light comes on for about 5 seconds, and the CPU fan starts
> > to spin, then it just turns off.
> > The reason I cleaned the fan in the first place is because the machine
> > was overheating and randomly turning off frequently.
> > Is there any thing I can do at this point, and if I need to replace
> > parts, what should I start with?

>
> Reseat your AGP video card.
>
> --
> Your mother was a gap-teethed harpy who wore bizarre clothes in a home
> for the permanently baffled.


It does not have an AGP video card. It comes right from the MB.

 
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John Holmes
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      03-13-2007
alice "contributed" in 24hoursupport.helpdesk:

> On Mar 13, 2:52 pm, John Holmes <nospam.13i...@gmail.com> wrote:
>> alice "contributed" in 24hoursupport.helpdesk:
>>
>> > I just opened up my PC case to take off the CPU fan and heatsink,
>> > cleaned it, put it back on, and now the whole thing will not power

on.
>> > The power light comes on for about 5 seconds, and the CPU fan starts
>> > to spin, then it just turns off.
>> > The reason I cleaned the fan in the first place is because the

machine
>> > was overheating and randomly turning off frequently.
>> > Is there any thing I can do at this point, and if I need to replace
>> > parts, what should I start with?

>>
>> Reseat your AGP video card.
>>
>> --
>> Your mother was a gap-teethed harpy who wore bizarre clothes in a home
>> for the permanently baffled.

>
> It does not have an AGP video card. It comes right from the MB.
>


Reseat any other cards you have installed then.

--
Your mother was a cranky bag-lady who used to do cow impressions on a
roadworks site.










 
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lkboop
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      03-13-2007
alice wrote:
> On Mar 13, 2:04 pm, "meerkat" <x...@xxxx.com> wrote:
>> "alice" <a...@fearofdolls.com> wrote in message
>>
>> news: oups.com...
>>
>>
>>
>>> On Mar 13, 1:54 pm, "meerkat" <x...@xxxx.com> wrote:
>>>> "alice" <a...@fearofdolls.com> wrote in message
>>>> news: oups.com...>Ijust
>>>> opened up my PC case to take off the CPU fan and heatsink,
>>>>> cleaned it, put it back on, and now the whole thing will not power on.
>>>>> The power light comes on for about 5 seconds, and the CPU fan starts
>>>>> to spin, then it just turns off.
>>>>> The reason I cleaned the fan in the first place is because the machine
>>>>> was overheating and randomly turning off frequently.
>>>>> Is there any thing I can do at this point, and if I need to replace
>>>>> parts, what should I start with?
>>>> 1. It worked Before you removed the HS and fan.
>>>> 2 When you `cleaned and refitted them, did you use
>>>> use heat transfer paste between the HS and CPU ?.
>>>> 3. You have probably disturbed a cable connector
>>>> during your exertions.
>>>> Unplug/replug all cable connectors firmly.
>>>> bw..
>>> I don't have any paste on hand, would lack of new paste really cause
>>> it to not turn on? I've replaced the power supply with a different one
>>> and made sure everything is plugged in correctly and tightly.

>> So you have made a change !.
>> You`ve changed the PSU.
>> I`d put the other one back in, `cos it seemed to work
>> before.
>>
>> A bit of advice for you, on computers.
>> When you do anything at all, only do one job, then
>> test what you`ve done.
>> You`ve worked on the HS/fan, and the PSU.
>> That`s 2 jobs, so now one of two could be your problem.- Hide quoted text -
>>

AND YOU DON'T FIX WHAT WHAT AIN'T BROKE

>> - Show quoted text -

>
> Actually, I tried the other PSU after the this whole incident, to see
> if it would make a differnce. Sorry for the confusion. So I've tried
> both PSUs at this point and it still will not power on for more than 5
> seconds. And it won't even attempt to power on a second time until
> I've turned the switch of and on again on the PSU.
> So what should my next step be? I may have spare processor in another
> PC, but I'll have to check and see what kind it is.
>

 
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lobo
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      03-13-2007
>
> All the conncetions and connectors look good. Both PSUs are in working
> order, at least they were before any of this happened.
> I have 1 CD drive and 3 hard drives- does it matter which power
> connectors go to which, like a certain order or something, would that
> have anything to do with it?


I would not think it would matter, unless you have reversed the ribbon plugs
or bent a pin connecting the hard drives. I would see if unplugging all but
the boot drive to see if it powers up. You have not indicated the wattage of
your power supply. You would need quite a bit to spin up all three drives at
start up, I would think.


 
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Ghostrider
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      03-13-2007

alice wrote:

> I just opened up my PC case to take off the CPU fan and heatsink,
> cleaned it, put it back on, and now the whole thing will not power on.
> The power light comes on for about 5 seconds, and the CPU fan starts
> to spin, then it just turns off.
> The reason I cleaned the fan in the first place is because the machine
> was overheating and randomly turning off frequently.
> Is there any thing I can do at this point, and if I need to replace
> parts, what should I start with?
>


Five seconds might not seem like too long but there is a good chance
that the CPU got fried. This would occur for the lack of heat-conducting
paste between the CPU heat slug and the surface of the heatsink. Let's
hope not but all of the other troubleshooting ideas have not succeeded.
 
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alice
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      03-13-2007
On Mar 13, 3:20 pm, "lobo" <el_l...@nowhere.net> wrote:
> > All the conncetions and connectors look good. Both PSUs are in working
> > order, at least they were before any of this happened.
> > I have 1 CD drive and 3 hard drives- does it matter which power
> > connectors go to which, like a certain order or something, would that
> > have anything to do with it?

>
> I would not think it would matter, unless you have reversed the ribbon plugs
> or bent a pin connecting the hard drives. I would see if unplugging all but
> the boot drive to see if it powers up. You have not indicated the wattage of
> your power supply. You would need quite a bit to spin up all three drives at
> start up, I would think.


I'm no longer in front of it, and I can't remember the wattage, but I
want to say 350?

 
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alice
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      03-13-2007
On Mar 13, 3:30 pm, Ghostrider <-...@fitron.142> wrote:
> alice wrote:
> > I just opened up my PC case to take off the CPU fan and heatsink,
> > cleaned it, put it back on, and now the whole thing will not power on.
> > The power light comes on for about 5 seconds, and the CPU fan starts
> > to spin, then it just turns off.
> > The reason I cleaned the fan in the first place is because the machine
> > was overheating and randomly turning off frequently.
> > Is there any thing I can do at this point, and if I need to replace
> > parts, what should I start with?

>
> Five seconds might not seem like too long but there is a good chance
> that the CPU got fried. This would occur for the lack of heat-conducting
> paste between the CPU heat slug and the surface of the heatsink. Let's
> hope not but all of the other troubleshooting ideas have not succeeded.


So if it was the lack of paste, would adding it now fix anything? I
would assume not. Should I be looking for a new processor? It seems as
though it was failing anyway, shutting down randomly for months now.

 
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lobo
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      03-13-2007

"alice" <> wrote in message
news: ups.com...
> On Mar 13, 3:20 pm, "lobo" <el_l...@nowhere.net> wrote:
>> > All the conncetions and connectors look good. Both PSUs are in working
>> > order, at least they were before any of this happened.
>> > I have 1 CD drive and 3 hard drives- does it matter which power
>> > connectors go to which, like a certain order or something, would that
>> > have anything to do with it?

>>
>> I would not think it would matter, unless you have reversed the ribbon
>> plugs
>> or bent a pin connecting the hard drives. I would see if unplugging all
>> but
>> the boot drive to see if it powers up. You have not indicated the wattage
>> of
>> your power supply. You would need quite a bit to spin up all three drives
>> at
>> start up, I would think.

>
> I'm no longer in front of it, and I can't remember the wattage, but I
> want to say 350?


If that's the case, then you will have start up issues. I had a similar
issue when I added a second drive with a 350 watt power supply. It would try
to start then shut down. Just not enough power to spin things up. I
unplugged the second drive that I added and it would start fine. Upgraded to
a 500 watt I believe and no problems.


 
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