While attempting to install ArcGIS Desktop, the following error(s) occur:
"Error 1904: failed to register C:\Program Files\ArcGIS\Bin\ESDA.dll (or GARenderer.dll, GAEngineLib.dll, GAmethods.dll or GAMethodsUI.dll). HRESULT -1073741795. Contact your support personnel."
These errors are caused by installing ArcGIS Desktop on an unsupported processor. SSE2 support is required for ArcGIS Desktop and is not provided by older Pentium 3 or AMD XP processors.