Trimurti <[log in to unmask]> wrote:
> Hello There,
>
> I have come across two systems.  One has an older Epox Socket 7 mainboard
> with an AMD 500MHz CPU, 256MHz RAM, and so forth.  The other system has an
> ECS K7S5A ??  mainboard with an 850MHz Duron and 320MB RAM.
>
> The Socket 7 system was working perfectly, other than the CD-Rom drive went
> bad.  They replaced it and also did a clean install of Win XP Pro, instead
> of Win Me like they used to have.
>
> The other system was a clean install of Win XP.
>
> Each of these have ATX power supplies, so, theoretically when you click on
> Start, ShutDown....they should shut off.
>
> Well, that's the problem, they don't.  They rattle around, dance and sing,
> then display the message  "It is now safe to turn off your computer"
> just like systems used to do with AT power supplies and thus causing the
> need to hold in the power button for 5 seconds.
>
> Could somebody please offer a tip?  Connectors on the mainboards each seem
> ok.  I suppose I should be looking for a solution in the BIOS?  If that is
> the case, then why did each system work fine with other operating systems
> installed?  (the ECS had win98SE )

When Windows 2000 first came out, a number of systems had this problem. It is
because it fully utilized ACPI for managing the cards, slots, and power
management. Windows 9x did not. A number of system did not properly implement
the ACPI standard.

Windows XP is based on the Windows 2000/NT kernel, so it may have the same
issues. Make sure that ACPI is turned on in the BIOS. If the install of XP did
not detect ACPI when installing, it may have to be re-installed to be able to
configure itself for it.

You should also check and see if you have the latest BIOS for the motherboard,
some of the systems that had problems under Windows 2000 required fixes in the
BIOS before ACPI and shutdown worked properly.


--
Russ Poffenberger               Engineering Specialist
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