AutoCAD 2013/2014 DWG Format

[#1]

Dear Autodesk Lovers,

while opening AutoCAD 2013 on my laptop (Windows 7 Home Premium, 64bit, 8gb, nVIDIA GTX660M 2GB, Intel i5-3210M Processor 3M Cache, 2.50 GHz) it showed

FATAL ERROR: Unhandled Access Violation Reading 0xffffffff Exception at f73b0004h

I was using AutoCAD 2013 before without any problems, it just suddenly started to show this Error Message and now I can't even run the program - shows in the opening. I can't handle with this problem. Is there any advice from any of you? I tried to reinstall, uninstall and then installed again and it still shows the same...

Thanks a lot for any advice! 

Appreciate  

[#2]

Try a Windows system restore back to a week it all worked fine.

[#3]

i faced with autodesk fatal error  Exception at f3167ec2h, what should i do ? i always aperas when im trying to lounch autocad 2013. And no maitenance updates helped me so far as well as deleting all the autocad files and instaling it new. . .

[#4]

You might better help in the Installation Help forum:
http://forums.autodesk.com/t5/Installation-Licensing/bd-p/24

[#5]

Dean is right, you will get faster responses in that forum.  Typically though, I will do a search thru the forums for misplaced posts. 

That being said, most exception errors are caused either by a malware virus or a problem with the .NET Framework.  You might run a full virus scan after updating your definitions and then run the .NET cleaner and reinstall the Framework fresh.  Repair AutoCAD and see if it helps.

.NET Framework issues can be resolved using the .NET Framework Cleanup Tool. More information about this tool can be found at my discussion thread here:

http://forums.autodesk.com/t5/Installation-Licensing/NET-Framework-Cleanup-Tool-for-Unhandled-Except...

Good Luck!