Win8.1 backup, history file record and file copy are deleted by mistake

A friend's Win8.1 computer has this situation: some webpages can't be opened now, for example: onedrive.live.com cloud storage and app store can't open, prompt to restore to the settings, install Dell Backup and The factorysetup error 5 error is prompted during Recovery. Power-on backups, historical file records, and file copies have been accidentally deleted. How should I recover?

This may be caused by a damaged partition. It is recommended to try to fix it:

1. Insert the source Windows installation media and press Windows+X+A. Open a command prompt and type:

2. Make a disk cleanup of the C drive and delete the temporary files in the Temp folder;

3. Run cmd in administrator mode and enter sfc /Scannow enters waiting for 100%, see if there is any damaged system file;

4, run cmd in administrator mode, enter DISM.exe /Online /Cleanup-image /Scanhealth, scan system files and official System file comparison;

5, then go to the previous step, insert the system disk, run DISM.exe /Online /Cleanup-image /Restorehealth under cmd, restore different system files to the system source file (note this step) May be prompted to find the file source failed, regardless of it);

6, running Windows 8.1 advanced startup, reboot to "safe mode with network prompt", admin mode running cmd , then enter DISM /Online /Cleanup-Image /StartComponentClea Nup /ResetBase.

After the above operation, we fixed the system recovery partition on Win8.1. By repairing the system recovery partition, we can solve the problem that the Onedrive cloud storage webpage and the application store cannot be opened due to boot backup, historical file recording and file copy deletion.