It depends on what you consider necessary. Leaving your computer on will not hurt a thing. The internet is contrived of millions of computers that stay on all the time. If you are looking to conserve energy, then it would be necessary.
Yes its totaly necessary because if you get hacked the hacker could delete windows. So when your computer is on and your not using it turn off your modem or turn off your computer.
Turn off the lights when you aren't using them. Turn off the TV/computer when you aren't using them and leaving the house. Turn the faucet off when you are brushing your teeth.
It is good to turn of your computer when you're not using it because it really saves energy. It's a pain to turn it back on when you to but it does help the enviroment. ALOT!
It depends if it is wireless or with a cord. If it has a cord, simply plug it into the computer using a usb plug on the back of the computer. If it is wireless, turn off the computer, turn off the mouse, turn the computer on, wait for the computer to ask for a mouse, then turn on the mouse, and the computer should pick it up within a minute or so.
When you turn off your computer without saving it all data will be lost.
computer turn button is located on the cpu or on casing of your cpu by which you can turn off your computer, but it is not a safe way to turn your computer off instead of shut down from the start menu option,
A computer can not turn off by itself. The monitor just turns blank it you leave it. To turn off the computer you have to prees the on button on your computer. If you press the botton on the monitor it is not turning the computer off... just the screen.
When you turn off your computer without saving it all data will be lost.
Left click the desktop then hit Alt+F4.
yes it is a good idea to cutt off or turn off the computer affer using because it helps to prevent the computer from damaging. when there will be an over full current. And also to prevent some accessory used in making the computer from getting burned because of over heat.
buckle your seatbelt
it stops, just put ur computer on like sleep, i think that might work