alternative
If the first option I posted earlier didn`t work and you have bluetooh in your pc then you need to up date your bluetooth software.
Most people have Broadcom as a main bluetooth software in their pc. If you do too update it to 6.2.0.9700 or above.
It`s got nothing to do with chinese/russian sites and reading a word reverse is not the help you looking for.
If your offline windows help files corrupted and you have bluetooth, the cause is bluetooth ( ye I know, strange) If you don`t have bt and still corrupted offline help files, you just use online help files .
If none of the above related to you, think of a friend who has the same os with you and go in to windows help files in directory copy them to a usb storage then replace it with your originals.