1. If it is normal in safe mode, you can test the following methods in turn:
1) Select Control Panel to uninstall newly installed programs and updates in Add or Remove Programs (or Programs and Features).
2) Disable the startup item test in safe mode (click the Windows logo key +R in the lower left corner of the keyboard, call "Run", enter the msconfig command, enter "Start", and remove the check mark in front of the automatic startup program that does not need to be started).
3) If the problem of the machine still exists after the above operation, then the problem you are talking about is probably a system problem. It is recommended that you can save important files and restart the machine. Press F9 to restore the machine's operating system when ASUS appears on the machine, and see if you can solve the problems you encounter.
Note: If your machine does not have windows operating system pre-installed, it is recommended that you try to put it on the system installation CD to save important files, and then reinstall the operating system to see if it can solve your problem.
2. If the security mode is abnormal, it is likely that there is something wrong with the system. It is recommended that you can save important files and restart the machine. When ASUS LOGO appears on the machine, press F9 to restore the operating system of the machine, and see if you can solve the problems encountered. If your machine doesn't have windows operating system pre-installed, I suggest you try to put it on the system installation CD to save important files, and then reinstall the operating system to see if it can solve your problem.