Hi Deborah,
Perhaps an older driver may be better than updating it, sometimes it is the newer drivers installed by Windows 10 Updates that cause problems with the video drivers . . .
Open Device Manager (accessible by right clicking your Start Button)
Expand the Display Adapters Section
Right click your video card and choose Properties
On the Driver Tab, choose 'Roll back Driver'
Restart your PC once done . . .
If that does not resolve the issue, go to the support page for your device on the manufacturers website, then download and install the video driver they recommend, it may well be an older version to the one you are currently running