How to solve the problem of old flash of Win8 system hard disk light

After the win8 is installed, how to solve the problem of the old flash of the Win8 system hard disk? Why is this happening, is there a better solution? Combine some experiences of using the win 8 system, and put forward some suggestions for solving the problem. .
I found such a problem today, I am a dual-system Win8 and Win7 networked installation, please see the tutorial of installing dual system (nt6 hard disk installation Win8/Win7 dual system) (U disk installation Win8/Win7 dual system), today The magical discovery that Windows 8 does not take the initiative to run any program, the CPU has been occupying 20% ​​~ 30% of the way, I feel very surprised, this is definitely a problem!
4 core CPU will not let Win8 spike! After Weibo verified, some friends also reflected this problem. I think it is caused by Microsoft account login and local account difference. Maybe after using Microsoft ID to log in, and connecting to the cloud, synchronization and other issues are high CPU usage, so create a local account, the problem Solved!
But this is not the core! Finally, I saw a friend of this website sharing, I know it is awkward. How to solve it?
Press win+I and then press Enter to enter the setting interface, select the family group on the left, and then choose to leave, exit the family group and solve the problem