How to upgrade to Windows 10 if the monitor does not give?

Question

Windows

I put the update Win8.1-> Win10
All the stages go through, and already when loading Windows, it gets dull for a long time, and the screen is dark.
I overload, it reaches the password entry screen, and everything, then it goes on for a long time, and the monitor goes into standby mode, while on the second monitor you can see that it goes back to the welcome screen.
ZYZH turned off the second monitor - everything is the same.
ZYZH2 in reduced resolution mode, if you select safe mode at boot, the same is also true.
How to identify the problem and fix it?

Answer 1

Try to demolish the vidyuhi drivers before updating, although as for me, such glitches deserve a full format.