Hi,
Thank you for posting on Microsoft Communities.
I will be glad to help you with the issue you have with the computer. I understand the frustration when things don't work the way it should.
Please follow the below methods to troubleshoot on the issue:
Method 1: Perform a sfc scan on the computer
to check if there are any corruptions on the computer. Please follow the below link to perform a sfc scan on the computer.
https://support.microsoft.com/en-us/kb/929833
Method 2:
Try to perform a DISM commands on the computer. Please follow the below link to know how to perform DISM in Windows.
https://support.microsoft.com/en-us/kb/947821
Hope this information is helpful. Please post in case you have any further issues, I will be glad to help you further.
Thank you.