Windows system can not turn off the machine solution

Recently I found that I have a few computer
after the shutdown, about half an hour can not be completely shut down, what is the reason?

A: When the Windows system does not shut down fault
, first look for the cause of the Windows system does not shut down, and then take the appropriate solution according to the reasons.

1, close "automatic restart" function

Windows Xp by default, when the system error occurs, it will automatically restart, so that when the user turns off the computer, if the computer is turned off If there is an error in the system, the computer
will be restarted. Turning this feature off can often solve the problem of automatic restart. The specific method is as follows:

(1) Click the “My Computer” icon on the system desktop.

(2), click to select “property”.

(3), click on the “Advanced” tab.

(4) Click the “Set” button.

(5), click to uncheck the "Automatically restart" checkbox.

(6) Click the “Set” button.

(8), return to “System Properties” dialog box, click the “OK” button.

(9) In the pop-up dialog box, click the “yes" button to restart the computer.

2. Unplug the USB device

(1), right click on the “Safely Remove Hardware” button on the taskbar.

(2), click to select “Safely Remove Hardware” command.

(3) Click to select the device option to pop up.

(4) Click the “Stop” button.

(5) Click to select the device option you want to use.

(6), click the “OK” button.

(7) Click on the end of the message box.

3. Some slow-responding processes in the harness

Some software running in the background of the system will be running when it is shut down. It takes time for the system to end these processes, such as some anti-virus software. It is also possible that the end of the background is an error in the individual program, causing the system process to fall into an infinite loop. At this time, it is forced to manually end the process of ending the infinite loop. The specific operation is as follows:
(1), press (trl+Ait+Delete) Key combination, pop-up "Windows Task Manager" window.

(2) Right click on the process that needs to end.

(3), click to select “end process” command.

(4) Click the "yes" button.