Hi, i can help your problems, be sure to follow all of this instrutions listed below:
1.) Clean uninstalled Autocad (you can search in autodesk websites or in google related)
2.) Delete autodesk content in Control panel- programs and files-unstalled-file Autodesk Content.
Note: Uninstall all Autodesk Content and Programs before the AUTODESK AUTODESK AUTOCAD.exe Files.
3.) UPDATE DRIVER ATI RADEON.. goto ati website and fill all the driver's information that you had, then download the recommended drivers......NvIDIA...go same with Ati.
4.) VERY IMPORTANT IS: UPDATE the .NET FRAMEWORK to 4.5( LATEST FRAMEWORK...2013 just simply search and download. its free...
NOTE: RESTART / REBOOT PC BEFORE INSTALLING AUTOCAD to MAKE CHANGES TO THE SYSTEM.. do it even if computer system will not prompted to do reboot.
5.) while installing Autocad, be sure firewall are OFF........and...ANTI-VIRUS is also disable....(it may cause to block one of those files that is why FATAL ERROR occur..
6.) After all of this is followed clearly....you can turn on your temporary disable software..
7.) HAVE A NICE DAY!!!!
Greetings From Philippines..........renotalz
Access a broad range of knowledge to help get the most out of your products and services.