This problem is almost impossible because 360 Guard is not compatible with the win8 system. It may be because our computer is poisoned and 360 cannot be enabled. The specific causes and solutions are as follows.
1. 360 security guard checked whether the computer was damaged by Trojans except for the problem. If 360 cannot be opened, you can download the Kingsoft guard professional to scan and kill Trojans. By the way, you can clean up your computer and try to enable 360 security guard.
2. If not, go to the official website to download a 360 security guard. Install and overwrite it, and enable 360 security guard on login.
3. If 360 is enabled for software re-download, you can use the windows cleanup assistant to clean up the software and then use Jinshan or Kaspersky anti-virus software to scan and kill the computer. This can be because the virus has been intruded.
4. We can enter the security mode of the system and then use anti-virus software for antivirus, because in security mode, general anti-virus software cannot run normally.