>occured after the latest windows update
Something in that update MAY have made your graphics adapter driver become outdated
What is your exact brand/model graphics adapter (ATI or nVidia or ???)
What is your exact graphics adapter driver version?
Have you gone to the vendor web site to check for a newer driver?
do NOT rely on Windows Update to have current driver information
-you need to go direct to the vendor web site and check updates for yourself
Could you clarify your situation?
You say that you cannot re-open an existing project. But, can you open a new project?
If you can, you might consider the damaged project angle on this.
If both new and old projects involved, then I will rethink the matter.
Looking forward to your follow up.