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First, let's analyze the reasons why the computer always shuts down automatically and the solutions:
Generally, such problems are based on software problems first, and then hardware failures. To solve the problem, we should straighten it out first, and if possible, we can eliminate it by substitution. Software:
1, the damage of virus Trojan horse, when the core components of the system are damaged, the running computer may shut down automatically.
2. Among the running software, some software has the option of turning off the task. Maybe the user didn't pay attention and turned these switches on. These softwares are common, such as Thunder, Express, Antivirus Software, BT Download, Video Play and so on. In the software settings, there is an automatic shutdown after completing a task. But generally the default setting is off. Its purpose is to automatically turn off the computer after completing the task when running a time-consuming operation.
3, operating system problems. First of all, make sure that the system is ok, and the drivers of various accessories should be installed correctly. In addition, if the simplified operating system is installed, such as ghost system, under certain conditions, the instability of the system will also cause the computer to shut down automatically. ? Hardware:
1, hard disk problem. You can take your own hard disk and do the system again on someone else's computer. If the problem remains, rule out the possibility of hard disk, or find another hard disk to enter safe mode and try it out on your own computer.
2, power supply problem. The restart or shutdown of the computer is probably a phenomenon that the output power of the power supply is insufficient due to the peak operation of hardware, and the power supply is also being replaced.
3, memory problems. Memory is the most prone to some strange failures. For example, your operating system is win 32. When you install 4g memory, and the 32-bit system can't recognize such a large memory, the computer may automatically crash and restart for no reason.
4, the temperature problem. Whether the radiator of cpu processor and graphics card works normally, whether the temperature is too high, and whether the cooling fan of CPU and graphics card works normally.
5, the motherboard problem. If all the above problems are eliminated, it is unfortunate to tell you that there may be something wrong with the motherboard of your host. Hardware failures can't be solved by ordinary people at all, either get after-sales maintenance or replace the new motherboard. ? Here, after eliminating each problem one by one, we can solve the problem of automatic shutdown of the computer. If you still can't solve the problem of automatic shutdown and restart of the computer, you can try the replacement method, that is, remove each piece of hardware and put it in another normal computer to check whether the hardware is normal.
Second, how to automatically shut down the computer? How to set the computer automatic shutdown command;
How does the computer automatically shut down? If you want your computer to shut down automatically, that is, automatically shut down after a certain period of time, you can set the computer automatic shutdown command.
For example, if you want to shut down your computer at 12:00, you can choose "Start → Run" and enter.
"at 12:00 Shutdown -s", so that at 12, a "System Shutdown" dialog box will appear on the computer, silently acknowledging that there is a 30-second countdown and prompting you to save your work. If you want to turn off your computer in a countdown mode, you can enter "Shutdown -s -t 3600", which means automatic shutdown after 60 minutes, and "3600" means 60 minutes.
After setting up the automatic shutdown of the computer, if you want to cancel it, you can enter "shutdown -a" during operation. In addition, enter "shutdown -i" to open the dialog box for setting automatic shutdown, and set automatic shutdown. Each parameter of Shutdown.exe has a specific purpose, and the execution of each parameter will produce different effects. For example, "-s" means to shut down the local computer, and "-a" means to cancel the shutdown operation.
For windows vists or windows 7 systems, the above commands need to be run with administrator privileges. Click the Start menu, enter cmd.exe in the input box of "Search Programs and Files", and find cmd.exe in the output list. Don't double-click at this time. Instead, right-click and select Run as Administrator from the menu.
Note: WinXP and win7 can't automatically shut down sometimes. It may be that the power options in their control panel are set incorrectly. Please check your settings to ensure that ACPI and APM can work normally. There are also APM (Advanced Power) in the BIOS of some motherboard systems