Hello,
Thank you for keeping us updated on the status of the issue and apology for the delayed response.
I would suggest you to perform System File Check to fix the corrupted system files and then check if this fixes the issue.
For reference:
Use the System File Checker tool to repair missing or corrupted system files
http://support.microsoft.com/kb/929833
Please reply with the results, in order to help you fix the issue.
Thank you