AT power supplies have a manual power switch function. Usually on the Power Supply itself, but some times wired to the case. Check your power wiring diagrams.
the power supply whines when you first turn on the system
To provide power to the power supply which in turn powers the motherboard.
The PC power supply box's function is to supply the computer with power. Without the PC power supply box, the computer would not be able to turn on and off.
15 & 16 and 16 & 17
Water is a power supply because it is used in power plants. The water is inside the boiler and the boiler is heated to make the water turn into steam. The steam is what makes the power.
yes, the power supply provides power specifically to the motherboard in turn dispersing power to all components plugged into the motherboard, hope this helped :)
Turn the power supply on. Then check all connections.
A computer's power supply unit provides all needed voltages for the components of a computer that are internal. Externals either draw power from the USB bus (which in turn gets it's power from the aforementioned PSU or a Hub with a power supply) OR have their own internal power supply with a cable.
Yes, that is normal.
Your power supply or motherboard has a problem.
ATX power supplies do not have dedicated switches. They are signaled to turn on by a small button plugged into the motherboard and placed on the front of the computer case. It is possible to force an ATX power supply to turn on by running a wire between the PS_ON wire (the green wire) to a ground wire (a black one).
While the Xbox is turned off, plug the power supply into the xbox first. Then plug it into the wall and it should be orange. Turn on the xbox and then the light will change to green.