wolwer1ne

+1 to Tainted-Archer

Updated BIOS using link he provided - it helped.

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.

EDIT:
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.

I have exactly the same problem. And it started few hours ago.
Laptop is the same (Dell Inspirion 7567)

I don't think it has something to do with hardware - sleeping mode messes things up. I suppose, some software update broke it for us both.
Will try to figure out more.

Maybe it is Windows update and GeForce Drivers Issue.
https://forums.geforce.com/default/topic/1026749/window-10-fall-creators-update-feedback-thread/?offset=463