is of the AT type or the ATX type.
That message is associated with the AT type systems. In an AT type system, the Power Switch is an alternate action type switch. Push it once and it latches and stays on. Push it again and it latches and turns off. It holds itself on or off you simply push it firmly and let go. The ATX system uses a momentary contact switch which is "spring loaded" to the off [open position]. When you depress it a momentary closed contact is made and circuitry on the motherboard [mobo]turns the system on.
For an AT type switch there is a bundled of heavily insulated wires going from the power supply to the switch. For an ATX type power switch there are no wires from the power supply to the switch. The wires from the switch are very small diameter and go to a place on the mobo where the other items from the front panel are connected.
There were mobo's that have power connectors that allow use of either an AT type of Power Supply or an ATX power supply [different connectors on the mobo]
It is possible that it was formerly an AT type and changed to an ATX type but the type of power supply switch was not changed and the BIOS was not changed to tell the system to respond as an ATX type.
Need to take the cover off and look at the Power Supply and wiring to the power supply switch.
Maybe tell us what type mobo it has.
Need more info from you to solve the problem. If AT type it gets turned off by turning the switch off, no other choice. But it seems that this system is some sort of cross breed.
A coworker bought a used pc. It is running windows 2000 pro. When you shut down from the start screen it tells you that you can turn off your system now. When you hold down the power switch it restarts.
How can you get the system to power down completely instead of showing this message?