If I see the desktop, it takes me a long time to get out icons and other items, which is usually caused by some software loading at startup or system problems. For example, I made a system for a customer before, and the system started up quickly after it was completed, but it was exactly the same as yours after installing 360 antivirus, and it was normal after uninstalling 360 antivirus. However, it is no problem to install the same system disk on other machines and also install 360 antivirus.

So, if you don't want to reinstall the system, try to uninstall 360 security guards, antivirus, safes, etc. One by one, and then restart to see if there is any improvement. If it is still not enough to uninstall all the basic items of the system, then it may not work without redoing the system.

For example, I made a system for another customer before, and its situation is very similar to yours. Seeing that the startup time of 360 antivirus for nearly one minute is definitely abnormal, I redone the system for him, remembering that installing 360 antivirus will cause slow startup. After reinstalling the system, the startup speed is very fast. Try to install 360 antivirus. The speed is still normal, and the startup time of 360 antivirus should not be so long. Although this situation seems that the software starts slowly, it is still caused by the system.