Does Apple 7 not shut down and clean up background applications? Is the application used before shutdown still running when it is turned on again? shut down

The reason why the computer shuts down automatically:

1. Virus cause;

2. Turn on "Automatically shut down and restart the computer when it encounters a serious error"

3. Serious memory errors lead to system crash (software problems);

4. Malicious programs or codes.

Phenomenon: The computer suddenly shuts down or automatically restarts the system during normal operation.

Phenomenon analysis BIOS: Now motherboards have the function of monitoring CPU temperature. Once the CPU temperature is too high, it will automatically cut off the power supply and protect the related hardware. On the other hand, power management and virus software in the system can also lead to this phenomenon.

Solution: If the above-mentioned sudden shutdown phenomenon appears all the time, first confirm whether the CPU cooling is normal. Open the chassis to visually check whether the fan blades are working normally, and then enter the BIOS option to check the fan speed and CPU working temperature. If the fan problem is found, carry out relevant dust removal maintenance or replace the fan with better quality. If the reason of hardware is eliminated, enter the system, manage the power supply from the installation CD of "windows", and then thoroughly disinfect it. After eliminating these factors, the cause of failure may be aging or damage of the power supply, which can be confirmed by replacing the power supply. If the power supply is broken, it must be replaced with a new one, and it must not be used again, which will burn out the hardware.