Thank you, Tom.
Seems that I solved it: after windows update of Intel UHD 630 driver, black screen problem is gone. It was not connected to HDD password, I disabled it for testing.
It strange, that Win downloaded more old driver 25.20.100.6617 / 08.03.2019 instead of installed 26.20.100.6709 / April 18, 2019 (installed by myself from Schenker flash that come with my laptop). But now it works.
BTW, what a recommended way to update drivers for new Compact 17? Download from https://www.mysn.de/driver/1_XMG/XMG_PRO17_XPR17M18/Drivers/Driver/ ?
But drivers in this location are way different from drivers in USB stick that come with my laptop. For example here is ControlCenter.zip v2.0 that does not work on my system, instead of v3.0 from USB stick that works OK... Also, I have 18 different drivers on stick, and only 9 in FTP.