Windows 8 system files are corrupted and can not automatically repair solution: First, check the image is repairable 1 scan images to check the damage. In the administrator command prompt, type the following command: Dism / Online / Cleanup-Image / ScanHealth This command will scan all system files and system files and official contrast , scan your computer for inconsistencies . 2 Check to see if there is an image corruption is detected . In the administrator command prompt, type: Dism / Online / Cleanup-Image / CheckHealth This command must be executed after the previous one command , found that the system file is damaged to use . When using the / CheckHealth parameters , DISM tool will report images are in good condition, can be repaired , or can not be repaired . If the image can not be repaired , it must give up the image , and start again. If the image can be repaired , you can use / RestoreHealth parameters to fix the image. Second, repair image If you scan the computer for inconsistencies detected damage to the system and reports the image is in good condition, can be repaired , you can use / RestoreHealth parameters fixed. 1 To fix the image , the administrator command prompt, type : DISM / Online / Cleanup-image / RestoreHealth This command is to restore the system files to those different source files into the official system , the other third-party software and user settings completely retained , the proportion fitted much better. And when the scan and repair part of the normal operation of the system is not damaged , the computer can work as usual . (2) Or, to use your own number of sources , do not use Windows Update to fix an online image , type : Dism / Online / Cleanup-Image / RestoreHealth / Source: c: \ test \ mount \ windows / LimitAccess Previous command needs to execute in case of networking , this command can not networked .