Windows 10 takes a very long time to load after updating to 2004. How to fix it?

Question

Windows

At the end of summer or at the beginning of autumn 2020, I installed an update from version 1903 to 2004. After that, the system began to boot for a very long time. Disabled-enabled fast start - nothing helped. I rolled back to the previous version, everything was fine. Then in the fall, something was automatically installed and again it took a very long time to load. The indicators on the keyboard turn on for a short while, then everything goes out and for about 5 minutes just a dark screen. I hoped that updating to 20H2 would fix the situation, but no.
How to determine what the problem is, how to fix it?

Answer 1

From personal experience, I was convinced that when updating Windows, you constantly get into some kind of alteration. Before the update, everything is fine, but as soon as the update is rolled up, the axis starts to load more slowly and the artifacts climb out. I would advise, if you fundamentally want to use the update, reinstall the system.