Check your graphic card driver against the recommended one on the SW website…

https://www.solidworks.com/sw/support/videocardtesting.html

Then check the latest recommended driver on the website for your graphic card.

NVIDIA…
http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk

AMD…
https://support.amd.com/en-us/download

Often there is a conflict between the two recommendations. This is where the fun starts!

Check the settings on your graphic card driver.

If the one that is recommended by SolidWORKS doesn’t work, then try the latest one on the graphics card website, reverting to older versions until you fine one that it’s happy with.