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Devices with certain Intel SSDs may enter a UEFI screen reboot or - Microsoft Community
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Devices with certain Intel SSDs may enter a UEFI screen reboot or crash repeatedly when upgrading to Windows 10 April 2018
When attempting to upgrade to Window 10 April 2018 Update select devices with certain Intel SSDs may enter a UEFI screen reboot or crash repeatedly.
Microsoft is currently blocking some Intel SSDs from installing the April 2018 Update due to a known incompatibility that may cause performance and stability issues. There is no workaround for this issue. If you have encountered this issue, you can roll back to Windows 10, version 1709 and wait for the resolution before attempting to install the April 2018 Update again.
Microsoft is currently working on a solution that will be provided in a near future Windows Update, after which these devices will be able to install the April 2018 Update.
I checked Settings and it seems the only option for not signing in is if you've been away from your computer.
Settings>Accounts>Sign-in Options>Require sign-in and using the drop down menu, choose never.
Since I'm the only user here, I set a PIN, rather than a password. Four numbers to remember, rather than a whole string of nonsense. :)