What happened to my computer? How do I turn off my computer?

The shortcut key for computer shutdown is: Ctrl+Alt+del, and there are three shortcut keys for computer shutdown

1. There is a power button on the keyboard, press it directly to turn it off.

2. Ctrl+Alt+Delete brings up the task manager, select the shutdown above, press and hold Ctrl while clicking the shutdown in the drop-down menu, and it will be closed in a few seconds.

3. Alt+F4, then press the U button, if there is a window, press Alt+F4 to close the window, and then shut down after closing the window.

Here's how:

1. Press the Ctrl key, Alt key and Delete button of the computer keyboard at the same time, and then the computer Sun Nian will automatically pop up a window.

2. In the task window that appears, we select the shutdown option, use the up and down keys of the keyboard to switch, after selecting the shutdown option, if you select the shutdown option in the drop-down menu that appears, the computer will be turned off.

Causes of Computer Crash and Solutions:

1. The motherboard and capacitor of the computer are damaged. Solution: It should be sent for inspection and maintenance in time, and it needs to be replaced.

2. The heat dissipation state of the computer is poor, we will emit a lot of heat in the process of using the nuclear ruler computer, if the heat dissipation is poor, it is likely to cause the computer to crash. Solution: Pay attention to the heat dissipation during the use of the calculator.

1. Conventional shutdown method.

After closing all the programs and files that are being executed, click [Return to Mu Wang] - [Power] - [Shut down] in order to let the computer perform the normal shutdown procedure.

You can also press the [Ctrl+Alt+Delete] button, click the power button in the lower right corner, and perform the normal shutdown procedure in turn.

Note: Be sure to save important files and data before shutting down!

2. Quick shutdown method.

Win+D] shortcut key to return to the computer desktop, and then press [Alt+F4] or Alt+Fn+F4 to press Enter.

3. Automatic shutdown method.

win+r] enter [shutdown -s -t 120] enter, and the computer will automatically shut down after 2 minutes (the specific duration can be changed according to your needs).

Tap the [Start] icon on the far left of the taskbar, then tap the [Power] icon, and then choose [Power Off].

Method 1: 1. Press the ALT key and the F4 key for a perfect combination, first ensure that the screen displayed on the current monitor is the computer desktop, and then press and hold the ALT key and the F4 key on the keyboard at the same time, as shown below

2. Then a dialog box will come out, and finally press the "enter" key on the keyboard to confirm, you can immediately turn off the computer and leave, as shown in the following figure:

Method 2: 1. Use the "shutdown" dos command to shut down the computer with one click, start-run-enter the "cmd" command, as shown in the following figure.

2. When you enter the "cmd" command successfully and press the "OK" key, you will enter the DOS command window, as shown in the following figure

3. Type "shutdown -s -t 1" in the dos command window cursor flash, and then press the "enter" key on the keyboard to confirm, the computer will shut down immediately, and you no longer have to wait to close a bunch of files and then shut down, as shown in the following figure:

Method 3:

1. Press the Ctrl key + Alt key + Del key at the same time, as shown in the following figure

2. Then a dialog box will come out, and a shutdown icon will be automatically displayed in the lower right corner, click it, as shown in the following figure:

Steps: 1. Close all the programs you have open;

2. Click "Start" and "Shut down the computer" to shut down;

3. Turn off the monitor after the computer stops working and the display indicator changes from green to orange;

4. Turn off the power switch on the socket strip.

A computer is a machine that uses electronic principles to process data based on a series of instructions. A computer can be divided into two parts: a software system and a hardware system.

The first computer was the ENIAC general-purpose electronic computer born at the University of Pennsylvania in the United States on February 15, 1946.

People refer to computers without any software installed as bare metal. With the development of science and technology, some new types of computers have emerged: biological computers, photonic computers, quantum computers, etc. On May 24, 1954, the transistor electronic computer was born.

Tap the [Start] icon on the far left of the taskbar, then tap the [Power] icon, and then choose [Power Off].