Why does my computer shut down when the battery shows 99 when the power goes out?

Reasons: 1. System power settings. In order to save energy, laptops generally have a "power settings" function; 2. Application software options. Some application software also has automatic shutdown options; 3. Computer hardware failure, such as Excessive temperature caused by poor heat dissipation or other hardware failures will cause automatic shutdown.

There are basically three possibilities for laptops to automatically shut down:

1. System power settings - to save energy, Laptops generally have a "power settings" function. You can set options such as how long it will take to automatically turn off the monitor, automatically turn off the hard drive, automatically sleep or automatically shut down when not in use. If you select automatic shutdown, it will automatically shut down when the corresponding time arrives.

2. Application software options - some application software also have automatic shutdown options. For example, downloading software, anti-virus software, etc. generally have the option to automatically shut down after the download or anti-virus is completed. If automatic shutdown is selected, it will automatically shut down after the corresponding task is completed.

3. Computer hardware failure—such as excessive temperature caused by poor heat dissipation or other hardware failures will cause automatic shutdown.

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