Install Autocad 2007 V230540 Work
What it is
Ensure you are logged in with an account that has local admin rights. If using an older perpetual license, you may need to manually activate it if the online servers are unreachable. Graphics Glitches: If the interface flickers, go to Tools > Options > System > Performance Settings install autocad 2007 v230540 work
Here is an "interesting review" of that installation experience for a legacy version: What it is Ensure you are logged in