Restore Windows Services To Default Startup Settings
Please try below programs one at time.
Download and run the Windows Update Troubleshooter.https://support.microsoft.com/en-us/instantanswers/512a5183-ffab-40c5-8a68-021e32467565/windows-update-troubleshooter
Automatically reset Windows Update componentshttps://support.microsoft.com/en-us/kb/971058
System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821)https://www.microsoft.com/en-us/download/details.aspx?id=20858
System Update Readiness Tool for Windows 7 (KB947821)https://www.microsoft.com/en-us/download/details.aspx?id=3132Reset Windows Update Components
Boot your computer in Safe Mode and let us know how computer works.
1. Immediately after the computer is powered on or restarted (usually after you hear your computer beep), tap the F8
key in 1 second intervals.
2. After your computer displays hardware information and runs a memory test, the Advanced Boot Options menu will appear.
3. Use the arrow keys to select Safe Mode