The computer cannot be turned off, and it is not possible to turn it on or log out

Rogue software

At the end of 2006, the condition of my machine was exactly the same as yours, the system was running very slowly, resources were occupied crazily, and advertising windows popped up inexplicably... Logging out or shutting down didn't respond, but the desktop icons were still there, and I was depressed. Later, my classmates taught me **360 security guards, haha!! The problem is solved.

<> "The system has been used for a long time, and many netizens have reported that the problem of system shutdown and cancellation is very inconvenient. Is there any way to permanently solve the problem of system shutdown and login, the first step in the face of system shutdown and logout is very simple, only need to encounter such a situation, the first possibility may be a virus in the computer. Therefore, it is recommended to open the antivirus software installed on the computer to check and kill the virus in the system, and clean it up in time.

Method steps.

1: Method 1.

In such a situation, the first possibility is that there is a virus in the computer. Therefore, it is recommended to open the antivirus software installed on the computer to check and kill the virus in the system and clean it up in time, as shown in the figure below.

2: Method 2.

If there is no virus in the computer scanned by virus, then you can try to shut down the computer with computer commands.

First we press the "Win + R" shortcut key, and then bring up the computer's run command box.

3: Then we enter "cmd" in the open operation box, and click OK to enter.

4: Then we enter the command "shutdown -s" in the window that opens, and then press enter, then we can shut down.

5: Method 3.

To disable the Group Policy setting, first press the same win+r key combination to open the run command box, and then enter " in the command freak, and then click "OK" to open.

6: After entering the Group Policy settings, go to User Configuration -- Manage Templates -- Start Menu and Taskbar, as shown in the figure below.

7: After clicking on the start menu and taskbar, find the "Delete and block access to shutdown, restart, sleep and hibernate commands" in the page, and then double-click to open it.

8: Double-click to open the "Delete and block access to shutdown, restart, sleep and hibernate commands", set it to "disabled", then click "OK", click "Answer, click OK and then see if it can shut down normally".

1. The computer does not have a shutdown option, only a logout option, which is related to the power settings. You can do this: "Control Panel.

Power Options - Hibernation" change. 2. In addition to the shutdown items, the computer shutdown options generally include switching users, logging out, restarting, locking, sleeping, etc. Be a boy.

Restart the computer, turn on the computer and quickly press the F8 key, and use the up and down keys to select to enter safe mode, maybe it will improve. If you can get in, then restart the computer again, continue to press the F8 key: wait until the selection menu comes out, and you can choose to use the last time the correct configuration boots windows option to solve the problem.

Unexpected reboots caused by hardware:

Hardware is the foundation or core of computer operation, and its stability plays a very important role in whether the software can work properly. I think that the reboot phenomenon caused by hardware is the most, don't think that hardware is very complicated, in fact, there are a lot of rules and regulations in it.

Normally, the unexpected restart of the machine caused by hardware has the following characteristics: software or replacement and upgrade cannot be solved, it is collateral, and the fault occurs in the same way. When looking for hardware faults, the first step is to troubleshoot hardware setup errors and setup errors.

This is the only way to find hardware faults correctly.

When the current flows in the hardware, the quality of the current has a very important impact on the hardware, and the voltage undervoltage, overload and fluctuation will cause a crash or restart, and the hardware will be directly damaged.

There are many reasons for unexpected restarts caused by power supply, such as voltage instability in the mains grid, case power failure, damage to motherboard components, and so on. This is mostly due to exceeding the upper limit of the range that the hardware can tolerate, which is generally determined by the quality of the board, the damage, the operating environment, and the quality of the combination.

When we use the computer, through long-term use, maintenance and repair, we should be able to find the balance of our own computer, and each computer will also have its own suitable working environment. <>