User Guide - Windows 8.1

7

 






 Disk Cleanup 
  

 Disk Cleanup:
1.  disk
 

2.




 Disk Defragmenter 
  

  

 Disk Defragmenter:
1.
 AC
2.
  disk
3.

 
 






  Windows Update ( Windows) 
  
  
 Windows
 Windows Update ( Windows) 

    System
Recovery ()  Windows 
  
20
 7 