Admin Rights - check (even used install as admin during setup just to rule it out)
UAC - off
Microsoft Security Essentials - off
No other anti virus has ever been installed or used, I just freeze my C:
It's the download install - here is some log file. Thanks for your help as well
2012/2/28:16:59:06 Robert Hudson ROBERTHUDSON Inventorui== Parameter: Page2 Action: SetMsiProperty Item: PRODUCTEDITION Value:INVPROSA
2012/2/28:16:59:06 Robert Hudson ROBERTHUDSON PageOpen ProductSelectionDialog2
2012/2/28:16:59:27 Robert Hudson ROBERTHUDSON PageOpen FullProgressDialog
2012/2/28:16:59:27 Robert Hudson ROBERTHUDSON Installing DirectX® Runtime: C:\Autodesk\Autodesk_Inventor_2012_English_Win_64bit\3rdParty\DirectX\DXSETUP.exe /silent
2012/2/28:16:59:51 Robert Hudson ROBERTHUDSON Install DirectX® Runtime Succeeded
2012/2/28:16:59:51 Robert Hudson ROBERTHUDSON Installing Microsoft Windows Media Format 9.5 Series Runtime: C:\Autodesk\Autodesk_Inventor_2012_English_Win_64bit\3rdParty\x64\wmf\95\wmfdist64.exe /quiet
2012/2/28:16:59:54 Robert Hudson ROBERTHUDSON Install Microsoft Windows Media Format 9.5 Series Runtime Failed Failure is ignored, Result=1603
2012/2/28:16:59:54 Robert Hudson ROBERTHUDSON Installing Autodesk® Inventor® 2012: TRANSFORMS="C:\Autodesk\Autodesk_Inventor_2012_English_Win_64bit\x64\en-us\Inventor\inventor.mst;C:\Users\ROBERT~1\AppData\Local\Temp\_AI6C59.tmp\x64\inventor\inventor-standalone.mst" ADSK_EULA_STATUS=#1 ADSK_SOURCE_ROOT="C:\Autodesk\Autodesk_Inventor_2012_English_Win_64bit\" INSTALLDIR="C:\Program Files\Autodesk\Inventor 2012\" FILESINUSETEXT="" REBOOT=ReallySuppress ADSK_SETUP_EXE=1
2012/2/28:17:05:33 Robert Hudson ROBERTHUDSON Install Autodesk® Inventor® 2012 Failed Installation aborted, Result=1603
2012/2/28:17:05:33 Robert Hudson ROBERTHUDSON Rollback DirectX® Runtime Failed Failure is ignored, Result=1619