Using W10 and v4.45 here I have never seen a black screen that's related to use of Videopad.
You might check for an updated video driver from your chip or card manufacturer's WEBsite...
http://geforce.com/drivers (NVidia)
http://support.amd.com/en-us/download
http://www.intel.com...detect/graphics
If problems arise, roll back to the prior driver via CONTROL PANEL|DEVICE MGR|VIDEO ADAPTERS|<your adapter name>|DRIVERS tab.