Microsoft today released a new update for Windows 10 to Windows Insiders on the Slow ring. KB4034450 comes with a fix for an issue causing some laptops to boot to a black screen.
KB4034450 supersedes KB4022716 which was recently released to the stable branch.
The official announcement states the following:
If you are in the Slow ring, we’ve released KB4022716 to keep you up to date with the latest Windows 10 Creators Update fixes as we prepare to release a new Windows 10 Fall Creators Update build in the coming weeks. As a result of receiving this update, your PC will be required to reboot to complete the update.
With the forth coming release of a new Windows 10 Fall Creators Update build to the Slow ring, we are testing a new update targeting framework and will be delivering the build in staggered phases. This will simulate the rollout process we use when we release major Windows 10 feature updates to retail customers.
After a short period of time, KB4034450 is expected to appear in the stable branch of Windows 10 and become available via the Windows Update service for Windows 10 Creators Update.