Archived from groups: alt.comp.periphs.mainboard.asus (
More info?)
In article <sUGWc.51415$X12.4842@edtnps84>, "Arthur Carré"
<arthur.carre@NOSPAM.globetrotter.net> wrote:
> >
> > Will it start with the video card removed from the computer ?
> >
> > Have you installed the ATX12V 2x2 power connector in the upper left
> > hand corner of the motherboard ?
> >
> > Paul
>
> With the video card removed, i get the same problem. And yes, i didn't
> forget to plug the ATX 12v cable.
>
> But what is the minimum recommended power supply for amd64 ??
For that, try looking on the AMD web site. They used to have some
recommendations.
All I can do for you, is estimate the amount of +12V current you will
need. AMD document 30430 says a 3700+ needs 89 watts. With 90%
conversion efficiency, this is 99 watts coming from 12V, or roughly
8 amps. Add 1 amp for fans, 0.5 amps for an idling disk drive,
0.5 amps for a CD, 1 amp for the +12V used by an ATI9800, and
the total comes to 11 amps. So, a power supply with at least
11 amps on the +12V output is needed. I suppose a 350W supply could
cover this requirement - check the label on the side of the supply.
Generally, I would recommend a 15A rating on +12V, to add some margin.
As for debugging your problem, it is time for a "cardboard test".
Remove the motherboard from the case. Strip all the components off
it. Remove the PSU from the case. Set up the bare motherboard
on a piece of cardboard, plug in the power supply.
Your motherboard has Voice POST, and error messages will be "spoken"
on the lime colored Lineout connector. Connect an amplified speaker
to the Lineout connector on the motherboard. The Lineout connector
is to be used, even if you own a Soundblaster or an Audigy - the Voice
POST signal is permanently wired to Lineout and doesn't use Windows
sound.
To turn the motherboard on, touch a conducting screwdriver tip to
the two pins where normally the power switch would be connected.
See if the motherboard will power on, and you should hear "No CPU
installed" come from the amplified speaker. The fans should spin.
The green LED on the motherboard should be lit as long as the switch
on the back of the PSU is in the "ON" position.
Unplug the PSU from the wall (always do that before adding or
removing hardware). Add the next component - logically it should
be the CPU. Power on the PSU and use the screwdriver tip again. This
time you should hear "System failed memory test", because you have
no memory. Continue adding components in this way, until the build
is completed on your benchtop.
That is the benefit of buying a motherboard with Voice POST or with
a POST display device - you can add stuff and wait for some feedback
from the motherboard.
HTH,
Paul