Hello,
Thank you for posting on Microsoft Forum.
I understand that you have removed a registry component accidently.
Redirection subnodes in the registry tree are created automatically by the WOW64 component using the name Wow6432Node. As a result, it is essential not to name any registry key you create Wow6432Node.
You should always take a backup of registry before you modify any settings in registry. For more help refer to the link below.
http://windows.microsoft.com/en-us/windows/back-up-registry#1TC=windows-7
As of now to resolve your problem, we can try to do a system restore to a date prior to the date you have made changes to computer.
http://windows.microsoft.com/en-us/windows/What-is-System-Restore#1TC=windows-7
***System Restore disclaimer:***When you use System Restore to restore the computer to a previous state, programs and updates that you installed are removed.
I hope this information helps. Please reply us back if any further issue with Windows, we’ll be glad to assist you.
Sarandeep S - Microsoft Support.