Automatic Shut-down

[eyemay]

I have rebuilt a number of machines and use both SCSI and IDE drives. I
seem to grasp the POST and work with the CMOS some. However, I do not
know where the information resides that sets a machine to shut down
itself using the Turn Off Computer sequence. Mostly I use XP and mostly
the machines do turn themselves off but occasionally I get one that goes
to the message "It is OK to turn off the computer now" (or something to
that effect). Can anyone tell me how to reset such a unit to turn
itself off?

 

[Guest]

its hardware related, not in settings. PSU type. modern PSUs like atx shuts
down completly, old psu types like at need button pressed to turn power off.