1. Press F8 immediately after starting the machine until "Let go, find the last correct configuration" appears in the advanced option and press Enter to repair it. It is not yet possible to press F8 to enter safe mode to restore the system or reinstall the system.

2. There are too many installation softwares on disk C; Slimming system disk with computer housekeeper.

3. Trojan horse or computer is infected with virus;

4. Insufficient memory, unable to complete the memory required for your operation in a short time, resulting in the machine being stuck.

Solution: 2,

1. After full formatting, reinstall the system or install antivirus software;

2. Start the task manager: press ctrl+alt+del to quickly start the task manager.

3. Use Tencent's computer housekeeper to kill virus after starting up and conduct a comprehensive physical examination of the computer;

4. Download the computer housekeeper to install the necessary drivers;