I'm not sure you can fix it really.

Anyway by default when you mount a drive from KDE it won't let you write. And even if you try to change the settings with a NTFS drive in KDE it will give you an error saying that it won't do it because it might curropt the drive. You'd have to manually change the settings.

If you are having troubles then you may want to back up files then re install windows. but thats just the last resort.