Hi,
I would like suggest you try the following methods and check if they are helpful.
Method 1
Please run "Fix it" tool to reset your Windows update components.
http://support.microsoft.com/kb/971058
Method 2
Using the System File Checker tool to troubleshoot missing or corrupted system files on Windows 7.
http://support.microsoft.com/kb/929833
Method 3
Using System Update Readiness Tool to fix Windows Update errors.
http://support.microsoft.com/kb/929833
Hope this helps.
Regards.
Spencer
TechNet Community Support
