Nearly all electronic devices have power buttons or power switches.
Typically, the gear powers on when this button is pressed and powers off when it’s pressed again.
Some older devices have apower switchthat accomplishes the same thing as a hard power button.
The “I” representspower on,and the “O” representspower off.
The power switch on the back of the case is for thepower supply.
However, using the shutdown process in theoperating systemis a better idea.
Depending on the damaged files, your system may fail to start back up.
Once the computer is off, you might press the same power button to turn it back on.
Sometimes a hard power-down is the best way to go, but not always.
It can happen on phones and computers alike.
SeeHow to Properly Reboot (Restart) a Windows Computerfor instructions onproperlyturning off your Windows computer.
If the power button isn’t working, it also won’t work to turn the equipment back on.
The most notable example is the smartphone.
Open Control Paneland go into theHardware and Soundsection.
It’s calledPrinters and Other HardwareinWindows XP.
Don’t see it?
In Windows XP, this option is off to the left side of the screen in theSee Alsosection.
Skip down to Step 4.
Select an option from the menu next toWhen I press the power button.
It can beDo nothing, Sleep,orShut down.
In some setups, you might also seeHibernateandTurn off the display.
In addition toDo nothingandShut down, you have the optionsAsk me what to doandStand by.
you’re able to have the power button do something different for either scenario.
SelectSave changesorOKwhen you’re done making changes to the power button’s function.
An easy way to remember: 0=false, meaning no power oroff;and 1 = true, oron.
(In the case of I/O, the ‘I’ represents 1.)
So, if a switch is turned to I, it’s in the On position.
If it’s turned to O, it’s in the Off position.
