Hi, My name is ***** ***** certified computer professional with over 10 years experience. I will be glad to assist you with this. .I am sorry to hear that you are having this issue. Try the System File Checker. Running the SFC will check your system for missing, corrupt or damaged files and attempt to fix them. Let me know the results please, we can try a couple of other options if the SFC fails to resolve the issue.
Please refer the article on “How to run System File Checker” and check if that helps.https://support.microsoft.com/kb/929833/en-gb