All levels of folk arrive here so I take it you can dive into the logs to share more.
Also, some registry cleaners, malware and trojans can cause this so get ready to dive deep.
Lately when a Windows 10 update runs, it fails. When it restores things my desktop is nothing like what I currently use and some of my programs are gone. I either need to find out what is preventing the updates (my antivirus program?) or to disable the updates.