I had no display issues with Win7 Pro 32-bit, but having migrated to Win 10, the display will randomly go black, sometimes with the mouse cursor visible. There is disk activity but no key combination seems to get the display on again so I end up rebooting via the power button to shut down and cold start.

BIOS is latest, as are display drivers. I have tried rolling back the drivers and even using generic VGA drivers to no avail. Also removed and rediscovered the display card in Device Manager. Lenovo don't have anything useful.

I have seen a few similar posts on other sites but no answers. Anyone have an idea?