My Adobe Premiere Elements was working fine but now when I try to pen it I get a message that says my HD video drivers are incompatible. I've been using Elements since August 2013 and had n problems. I can run Premiere Elemens 4, Flight simulator and Bluff titler just fine. Is this a computer issue or a software issue?
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?
For Windows, 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
ATI Driver Autodetect http://support.amd.com/en-us/download/auto-detect-tool
nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
I think that John T. has given you the necessary fixes for your issue.
I will Edit your post's title, to help others in the future find it via a Search of the Forum.