On 16 Nov 2006 05:53:07 -0800, "Dan" <makundi@gmail.com>
wrote:

>The machine doesn't get anywhere near executing cmos. No signal ever
>goes to the display, no beep codes, nothing. Only that power on LED
>lights (first day it was blinking, thereafter it lights continuously).
>The IDE light also comes on when the ON button is pushed, then goes off
>after 10 seconds or so. The PSU fan is running.
>
>I visited HP web, but the info given there about PSU fix is not helpful
>at all (such as telling me to go try another wall outlet ha-ha)
>
>Motherboard power supply looks like ATX: I haven't yanked it out to
>count the pins, but I suspect it wouldn't be same as generic ATX. Plus
>wiring could be different as someone has noted before.

Why suspect it wouldn't be the same? If it looks like ATX,
odds are it is. Dell was the OEM notorious for using an ATX
connector with non-ATX pinout, not HP or Compaq.

That doesn't necessarily mean it has a standard ATX case
(dimensions), some older HP were a shorter form factor with
the same rear face dimensions but not as long. Either way,
measuring the case dimensions and noting the connector wire
colors should indicate what is needed to replace it (if
that's the problem).

>The power supply is huge,

Define huge.

>with enough 5/12 rails to power 6 or so ide
>devices, although I've been using just one HD and one CDRW--and one
>dormant floppy drive. I therefore don't think it is the case of
>overload.
>

# of plugs doesn't necesarily mean anything, and at this
point it's not a matter of initial capacity, it's a matter
of whether the part has failed. Everything fails,
eventually... now it's just a matter of figuring out what
has gone wrong.