The computer automatically shuts down for no reason.

The computer automatically shuts down for no reason. It needs specific analysis. It is generally divided into two categories. In terms of hardware, the temperature of the device is too high, which leads to the system starting self-protection mechanism — — Automatic shutdown. In terms of software, the situation is more complicated, such as the software itself has a bug, resulting in automatic shutdown. Or there are scheduled tasks, meeting the requirements, starting the scheduled tasks, and finally performing the shutdown and other operations, as well as the virus and other bad programs. Hardware: 1. Power supply: With the increasing number of peripherals, the original power supply of the computer is not enough. Such automatic shutdown is still very common. Solution: Unplug unused peripherals, reduce the power supply, or replace a more powerful power supply. 2. Voltage instability: The operating voltage range of the general household computer's switching power supply is 170V-240V. When the mains voltage is lower than 170V, the computer will automatically restart or shut down. Because the voltage fluctuations are not clearly perceived by the user, it is mistaken for the computer's inexplicable automatic restart. Solution: For areas with frequent power supply instability, you can purchase UPS power or 130-260V wide-amplitude switching power supply to ensure a stable working environment. 3. Poor contact between the power plug and the socket is also one of the reasons for the computer to automatically shut down. Especially for users who need to plug and unplug the power supply every time the switch is turned on, the probability of such a fault is relatively high, and the long-term plugging and unplugging will cause the contact piece to loosen. Therefore, it is better to use a tow board with a switch, without plugging and unplugging the power plug, just turn off the power switch. 4. There is also a problem, that is, the problem of the computer power switch button and the reset button. If the power switch or the reset button is damaged, the automatic shutdown problem may occur due to occasional touch of the chassis or normal use of the computer. 5. With the popularity of large-scale games, the demand for graphics cards is getting higher and higher. Because the temperature of the graphics card is too high, there are not many automatic shutdowns. At this time, monitoring software can be used. If a certain device has a high temperature. Automatic shutdown, you can take corresponding measures to cool it, if it is a desktop, you can add a graphics card fan to alleviate the problem of excessive temperature, 6. If it is a laptop, you can use the notebook's dedicated ventilation base and other measures. 7. Some hardware devices have the option of automatic shutdown. Check if the devices in this computer are selected for automatic shutdown. The boot button enters the BIOS to check whether there is a wake no lan for S5 in the sub-item. This is the NIC with wake-up function, set it to disable. Can I also check if the wakeup function of the network card is turned off in the device manager? Start → control panel → device manager & rarr; NIC adapter & rarr; attribute & rarr; advanced & rarr; wake up settings & rarr; set & ldquo; no & rdquo; & rarr; 8. If you have used a laptop for more than one year, and often auto-shutdown or automatic restart, you can consider opening the back cover of the chassis to clean the dust around the ventilation channel. First of all, you must remove the computer's power supply or lithium battery, and your hands should take anti-static measures to prevent static electricity from damaging the delicate electronic equipment. The hand-cranked extractable fan carefully cleans the dust. If the fan is noisy, you can drop one or two drops of lubricant in the center shaft. If you have poor hands-on ability, you do not need to disassemble the fan. Just carefully remove the dust from the air outlet and the air inlet and the ventilation passage. Desktops may have a longer cleaning cycle because of the larger space. Software failure: 1. First check the power manager to see if the power-off mode for automatic power-off is set. If yes, change to a longer time, or set it to never. Start → Control Panel & Rarr; Power Options & Rarr; Power Usage & Rarr; Turn off the monitor, turn off the hard drive, system standby & rarr; never → 2. Observable start → all programs → start & larr; Is there a bad program for timing shutdown? Then, look at the start → control panel → planning tasks have a delay shutdown program? (Some users will be given scheduled tasks for delayed shutdown). 3. There are also some automatic shutdown programs that come with the software. See if you accidentally selected this stuff that you don't need? For example: Thunder has this shutdown option, the specific steps are: Intelligent download &rarr in the lower left corner of the Thunder panel; After downloading → Shutdown, standby, exit Thunder and other options, if you accidentally check the shutdown option will automatically shut down. 4. For example, Baidu Cloud has the option to automatically shut down after downloading large files. If it is delayed, it will automatically shut down. 5. In addition to Thunder software has automatic shutdown function, more common anti-virus software, express, BT download, video playback and so on. In the software settings, there are actions to automatically shut down after completing a task. But the general default setting is off. The purpose is to automatically shut down the computer after completing the task when running a more time consuming operation. 6. Update driver: Right click on my computer → management & rarr; device manager & rarr; computer & rarr; right click on ACPIUniprocessor PC & rarr; update driver & rarr; install from list or specified location (advanced) & rarr; next & rarr; do not search . I have to choose the driver → next → select Advaanced Configuration and Power Inerface (ACPI) PC→ next step, until the end of the device driver replacement, restart the computer. 7. Registry settings: set in the registry to avoid unwarranted automatic shutdown. Start → Run → Enter: regedit Enter to open the registry, navigate to the following location: HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon Change the right key value: PowerdownAfterShutdown to 1 (double-click this key value, which will Change the value data to 1) Refresh (F5 key) to take effect. 8. Finally, the key files of the operating system are lost, and the system will choose to automatically shut down because it cannot continue to run.