Try checking Windows for corruption as follows.
- Right click the Start button and go to Command Prompt (Admin).
- Type (or copy/paste) sfc /scannow and hit Enter.
SFC is an acronym for System File Checker. If it finds corrupted files, it'll attempt to repair them. However, sometimes you'll get a message which says someting like, "Windows resource protection found corrupted files, but was unable to fix some of them",
or words to that effect.
If you see a message like that, use the same command prompt to copy/paste the following command:
- DISM.exe/Online /Cleanup-image /Restorehealth
Both of these can take about 30 mins each to run. Also, when SFC runs, it does so from within Windows, but DISM downloads original system files from Microsoft's servers to replace those which the other tool failed to fix. Therefore it's essential that you
maintain your Internet connection while it runs.
Since both tools run from a command prompt, there's no animated graphics to watch I'm fraid, but you'll get a report when i finishes.
If you see any errors appear, please make a note of them and post those here.