1. Windows 7

Windows 7

Your version of AutoCAD is not supported in Win10 as explained hereFor most users these free tips help a lotFor others they roll back to an older Windows OS / older computer and hang on tight to it for life.For others still they purchase a fix from these folksAs far as Autodesk is concerned, you will need to subscribe to a newer version of AutoCAD.There are many free to use CAD programs out there that behave/look like R2000 that you can get and use, they all read DWG files. Google Search the term AUTOCAD ALTERNATES.Hope these help.