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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?

"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?
>
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..

On Mar 13, 1:54 pm, "meerkat" <x...@xxxx.com> wrote:
> "alice" <a...@fearofdolls.com> 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?
>
> 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.

"alice" <> 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...>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?
>>
>> 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.

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: groups.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 -
>
> - 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.

"alice" <> wrote in message
news: ups.com...
> 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: groups.com...>Ijust
>> >> opened up my PC case to take off the CPU fan and heatsink,
>>
>> >> 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 -
>>
>> - 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.
>
At this point it is necessary to prove that you have a
good PSU it`s quite possible that the PSU/s are failing
under load.

You could also check around the cable connection from
PSU to motherboard (the big/long plug), to see if
the capacitors (little tubular pillars) all look healthy.
They should have smooth flat tops, and not be leaking
gunge at the bottom.

On Mar 13, 2:29 pm, "meerkat" <x...@xxxx.com> wrote:
> "alice" <a...@fearofdolls.com> wrote in message
>
> news: ups.com...
>
>
>
> > On Mar 13, 2:04 pm, "meerkat" <x...@xxxx.com> wrote:
> >> "alice" <a...@fearofdolls.com> wrote in message
>
> >>news: groups.com...
>
> >> > On Mar 13, 1:54 pm, "meerkat" <x...@xxxx.com> wrote:
> >> >> "alice" <a...@fearofdolls.com> wrote in message
>
> >> >>news: groups.com...>Ijust
> >> >> opened up my PC case to take off the CPU fan and heatsink,
>
> >> >> 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 -
>
> >> - 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.
>
> At this point it is necessary to prove that you have a
> good PSU it`s quite possible that the PSU/s are failing
> under load.
>
> You could also check around the cable connection from
> PSU to motherboard (the big/long plug), to see if
> the capacitors (little tubular pillars) all look healthy.
> They should have smooth flat tops, and not be leaking
> gunge at the bottom.- Hide quoted text -
>
> - Show quoted text -

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?

"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?
>

The fan should have 3 wires , 2 for power and one for speed sense

If the system can't see the fan spinning ( via the 3rd wire) then the power
will be killed


check the fan cable is

a) connected to the right header on the motherboard , there may be 2 next to
each other

and

b) get a different heatsink fan. you may have damage it


Cub

alice wrote:

> 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.

When you remove the heatsink from your cpu, you also have to remove all
traces of the old paste or pad, from the heatsink plate as well as from the
cpu die (which can be dangerous to the cpu). Then, put just a little bit -
one drop usually does it - of new arctic silver or other conducting paste
on the mid of the die.
Make sure the heatsink plate sits perfectly plain on top of the cpu.

If you didn't take care of that all, your cpu may be fried the first seconds
you turn the pc on.
--
vista policy violation: Microsoft optical mouse found penguin patterns
on mousepad. Partition scan in progress to remove offending
incompatible products. Reactivate MS software.
Linux 2.6.17-mm1,Xorg7.1/nvidia [LinuxCounter#295241,ICQ#4918962]

On Mar 13, 2:35 pm, "Cub" <c...@home.com> wrote:
> "alice" <a...@fearofdolls.com> 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?
>
> The fan should have 3 wires , 2 for power and one for speed sense
>
> If the system can't see the fan spinning ( via the 3rd wire) then the power
> will be killed
>
> check the fan cable is
>
> a) connected to the right header on the motherboard , there may be 2 next to
> each other
>
> and
>
> b) get a different heatsink fan. you may have damage it
>
> Cub

All the wires from the fan look ok, the all connect to a connector
that is properly plugged into the MB. I tried a different fan, same
type but too small to actually fit over the heatsink, but I tried it
just to see if the power would stay on, and it did the same thing,
turns on, fan spins, then turns off right away.