I tried to uninstall and re-install all GeForce drivers and products - no luck.
But after disabling Intel video adapter I noticed some changes:
Sleep mode is no longer available, but after closing lid laptop boots with all previously opened windows and without any mess on the screen.
Solved it hard way - made laptop go hyberbate instead of sleep on closing lid.
Takes more time to wake up, but it helps. Will wait for software update.