Win8 system screen automatic rotation function failure how to do

1, win8 flat with gravity sensing sensor disposed at the right side of the toolbar (CharmBar) can be transferred in the operation panel;

2, the sidebar function disappeared, only adjust the brightness , gravity sensor can not automatically turn the screen;

solution:
1, in the right sidebar Search Services, start the Services settings;

2, in which to find items sensor Monitoring Service , right-click, click properties startup type to automatic;

3, then this setting to restore the sidebar;

5, you can switch by clicking on whether to allow automatic transfer screen.