Presss my on button and nothing :/

woke up one morning and turned my computer on and all that happened was
a flash of light from the neons on the front and nothing :( like a fuse
had been blown... all parts were recently replaced all were new... if
anybody might have some idea about what is happening here id love to
hear some feedback... have also replaced the power supply but the
problem continues to occur... some power exists as there is a light on
the motherboard suggesting that the PS is ok but its not starting up...
monitor also switches on to standby but nothing more
thanx for any feedback people :)

Kaltoran

The first thing to try is to unplug the main power for about three
minutes or so and try again, just in case it's a 'lock up'.

The first thing to check is the power supply, try a known good one so
that we can eliminate this.

You don't say how old the computer is, if three or four years old then
I would suspect the bios back up battery, sometimes rebooting the bios
by taking the battery out for about three minutes is another option.
*
But do remember* Removing the battery will result in you having to go
through the bios settings to re-set.

Your first goal is getting the bios to boot, passing that POST (Power
On Self Test) when you power up, the bios checks itself out and if OK
gives a single beep, then hands control,over to the CPU and the hard
drive starts to load data into RAM.

You'll get bios beep or POST as correctly known just with the bare
essentials and that is just the CPU, RAM and Graphic card installed the
rest can be unplugged and that includes the hard drive, this is all that
is required to get the bios booting and if so wish you'll be able to
access the bios set up screen.

So, we're looking at the remaining items, Graphic card, CPU and Mobo.

Just supposing we ran the mobo in the 'bare essential mode' and all was
OK and working you would get something like 'Please insert the disc with
the operating system on' or simply 'NO hard drive' or something to this
effect, it wouldn't just sit there dumb.

Look out for bad caps, their tops should be nice n' flat, here's some
pictures -: 'Don Davidson Computer / Bad Capacitors in System Boards'
(http://home.earthlink.net/%7Edoniteli/index27.htm) and no gunge leaking
out.

davy

"Kaltoran" <Kaltoran.2xhqv1@no.email.invalid> wrote in message
news:Kaltoran.2xhqv1@no.email.invalid...
>
> woke up one morning and turned my computer on and all that happened was
> a flash of light from the neons on the front and nothing :( like a fuse
> had been blown... all parts were recently replaced all were new... if
> anybody might have some idea about what is happening here id love to
> hear some feedback... have also replaced the power supply but the
> problem continues to occur... some power exists as there is a light on
> the motherboard suggesting that the PS is ok but its not starting up...
> monitor also switches on to standby but nothing more
> thanx for any feedback people :)
>
> Kaltoran


Another thing to try: if you have a bad HDD you could still boot a live
Linux CD. In fact, if the live CD booted, that would make me suspect the
HDD had gone belly up. Some of the live Linux CD's allow you to pull data
from the underlying HDD even when formatted in NTFS as it would be if you
had XP on it. It's just a thought but if correct it would be a time saver.
JG

On Tue, 25 Sep 2007 10:27:09 -0500, Kaltoran
<Kaltoran.2xhqv1@no.email.invalid> wrote:

>
>woke up one morning and turned my computer on and all that happened was
>a flash of light from the neons on the front and nothing :( like a fuse
>had been blown... all parts were recently replaced all were new... if
>anybody might have some idea about what is happening here id love to
>hear some feedback... have also replaced the power supply but the
>problem continues to occur... some power exists as there is a light on
>the motherboard suggesting that the PS is ok but its not starting up...
>monitor also switches on to standby but nothing more
>thanx for any feedback people :)
>
>Kaltoran
>


Are you certain the replacement PSU works properly AND is of
adequate capacity (not low wattage or overrated generic
brand)? If you have a multimeter, check the voltages in
this state.

Try clearing CMOS while ac power is disconnected via jumper
or pulling battery for 10 minutes.

Check the battery voltage, or if unable, if you have a spare
battery try it.

It might help to give a concise but complete list of the
major components in the system including makes, models, and
also including the wattage and 12V current rating of the
PSU.

Disconnect all components nonessential towards getting the
system to POST. Leave only CPU, heatsink/fan, 1 memory
module, video card (or ideally, if you had a substitute
video card, even some ancient PCI video card it would be
good to try it instead). Clear CMOS again and retry the
system.

If none of this works and you're fairly confident the
replacement PSU is suitable, it would seem the motherboard
is faulty. You might carefully examine it, but that may
not find the fault.

davy wrote:
>
.... snip ...
>
> Look out for bad caps, their tops should be nice n' flat, here's
> some pictures -: 'Don Davidson Computer / Bad Capacitors in System
> Boards' (http://home.earthlink.net/%7Edoniteli/index27.htm) and no
> gunge leaking out.

I know Don. He has been retired for at least 5 years, and probably
close to 10 since he last built machines. I am surprised he got
caught in the bad cap mess.

--
Chuck F (cbfalconer at maineline dot net)
Available for consulting/temporary embedded and systems.
<http://cbfalconer.home.att.net>



--
Posted via a free Usenet account from http://www.teranews.com

On Wed, 26 Sep 2007 00:30:00 -0400, CBFalconer
<cbfalconer@yahoo.com> wrote:

>davy wrote:
>>
>... snip ...
>>
>> Look out for bad caps, their tops should be nice n' flat, here's
>> some pictures -: 'Don Davidson Computer / Bad Capacitors in System
>> Boards' (http://home.earthlink.net/%7Edoniteli/index27.htm) and no
>> gunge leaking out.
>
>I know Don. He has been retired for at least 5 years, and probably
>close to 10 since he last built machines. I am surprised he got
>caught in the bad cap mess.


The first boards with bad caps, and/or a higher current,
lower voltage CPU VRM subcircuit were around the 440BX era.
That's roughly '98 and thereafter.

If I had to speculate, about genuinely bad caps versus caps
inappropriate for the use as employed on some components,
the height of that might have been around '00. Caps from
some parts during this period would go bad and vent even if
the equipment just sat unpowered and disconnected, on a
shelf. I still have a board from that era as a reminder of
the problem, and as time passes even more of the caps vent.
I keep it as a reminder because this particular board got
quite good reviews on the most popular websites at the time,
it is a reminder that a short term test says nothing about
long term fitness of a part.

On Sep 25, 11:27 am, Kaltoran <Kaltoran.2xh...@no.email.invalid>
wrote:
> woke up one morning and turned my computer on and all that happened was
> a flash of light from the neons on the front and nothing :( like a fuse
> had been blown... all parts were recently replaced all were new... if
> anybody might have some idea about what is happening here id love to
> hear some feedback... have also replaced the power supply but the
> problem continues to occur... some power exists as there is a light on
> the motherboard suggesting that the PS is ok but its not starting up...
> monitor also switches on to standby but nothing more
> thanx for any feedback people :)
>
> Kaltoran

I'd check the cable first. In trouble shooting, the first thing I do
is to check the connections.
Jennifer
www.powersupplycables.com

powersupplycables wrote:
> Kaltoran <Kaltoran.2xh...@no.email.invalid> wrote:
>
>> woke up one morning and turned my computer on and all that happened was
>> a flash of light from the neons on the front and nothing :( like a fuse
>> had been blown... all parts were recently replaced all were new... if
>> anybody might have some idea about what is happening here id love to
>> hear some feedback... have also replaced the power supply but the
>> problem continues to occur... some power exists as there is a light on
>> the motherboard suggesting that the PS is ok but its not starting up...
>> monitor also switches on to standby but nothing more
>> thanx for any feedback people :)
>
> I'd check the cable first. In trouble shooting, the first thing
> I do is to check the connections.

No, I think the real problem is that his machine has choked on the
excess (over one) periods terminating his sentences, and the lack
of capital letters at the start of sentences. This happens to all
machines infested with the MultidotNoCaps virus. As long as those
machines are not fed that sort of drivel, the virus never seizes
control.

--
Chuck F (cbfalconer at maineline dot net)
Available for consulting/temporary embedded and systems.
<http://cbfalconer.home.att.net>



--
Posted via a free Usenet account from http://www.teranews.com

"CBFalconer" <cbfalconer@yahoo.com> wrote in message
news:46FC7ED5.B90A9E79@yahoo.com...
> powersupplycables wrote:
>> Kaltoran <Kaltoran.2xh...@no.email.invalid> wrote:
>>
>>> woke up one morning and turned my computer on and all that happened was
>>> a flash of light from the neons on the front and nothing :( like a fuse
>>> had been blown... all parts were recently replaced all were new... if
>>> anybody might have some idea about what is happening here id love to
>>> hear some feedback... have also replaced the power supply but the
>>> problem continues to occur... some power exists as there is a light on
>>> the motherboard suggesting that the PS is ok but its not starting up...
>>> monitor also switches on to standby but nothing more
>>> thanx for any feedback people :)
>>
>> I'd check the cable first. In trouble shooting, the first thing
>> I do is to check the connections.
>
> No, I think the real problem is that his machine has choked on the
> excess (over one) periods terminating his sentences, and the lack
> of capital letters at the start of sentences. This happens to all
> machines infested with the MultidotNoCaps virus. As long as those
> machines are not fed that sort of drivel, the virus never seizes
> control.

www.sarcasmoverload.com