FC-5000: Windows Updates
Microsoft Windows 10 may take a long time to boot or when performing a Restart while it is installing updates, sometimes without providing any indication that it is installing updates. The screen may be black (display backlight off), blank (display backlight on but nothing on screen), or with a blue image (with no other indicators) and may not complete for several minutes. Depending on what updates are being installed, this delay in booting can range from less than a minute to 20 minutes or more for very large update(s).
If you are wanting to avoid such a potential delay when booting or doing a Restart on the FC-5000, and your organization allows it, you could change from the automatic installation of updates to manually running Windows update. This is done under Start > Settings > Update & Security > Windows Update > Advanced options. Please note that allowing automatic updates ensures you always have the latest fixes, security patches, and features from Microsoft and is the factory default and recommended setting.
To avoid delays while booting/resuming or when wanting to perform field work, Microsoft recommends that you properly set your Active Hours so downloading and installing of updates should not occur during that time.
If you want further control downloading updates, learn how to manage automatic updates
If you want security updates immediately, but would prefer to delay feature upgrades, learn how to use the 'defer' feature