Workaround for Windows 7 system folder access Denied

1, select the file or folder you want to delete, the right mouse click on the folder--> Properties--> switch to the Security tab--> Click on the lower right of the "advanced" button--> switch to the "Owner" tab--> click on the "Edit" button--> Change owner to box, click on your current username, change the owner of the file to the current user name, such as Administrators, and check the "Replace the child container and object Owner" option (folder), so that you have ownership of the folder.

2, back to the "security" option in the "Group or user name" In addition to administrators three other options selected Delete, all the way click OK, OK.