Add Missing Package
1. Click the Start button and type cmd.exe in the search box.
2. Right-click on the cmd that comes up and select Run as administrator.
3. Once you are at the command prompt, copy/paste the following line and hit enter.
pnputil -a C:\Windows\WinSxS\amd64_cpu.inf_31bf3856ad364e35_6.1.7601.24214_none_bbf9b0e91f1ea205\cpu.inf
Let me know if it says successfully installed. If it does, try installing the update again.