Acrobat Pro crashes immediately on opening since update to 9.5.1. Help!

Question

Since I updated Acrobat Pro to 9.5.1, it crashes immediately on opening. I get two error messages, both stating, "Adobe Acrobat 9.5 has stopped working." The information in the problem signatures are:
Problem signature:
  Problem Event Name:               BEX
  Application Name:                   Acrobat.exe
  Application Version:                 9.5.1.283
  Application Timestamp:            4f71b565
  Fault Module Name:                 atidxx32.dll_unloaded
  Fault Module Version:              0.0.0.0
  Fault Module Timestamp:         4e0a91a0
  Exception Offset:                      69af8620
  Exception Code:                       c0000005
  Exception Data:                        00000008
  OS Version:                             6.1.7601.2.1.0.256.48
  Locale ID:                                1033
  Additional Information 1:          fa66
  Additional Information 2:          fa6696398de2b9f98383d7a3bf5c3ea1
  Additional Information 3:          fa66
  Additional Information 4:          fa6696398de2b9f98383d7a3bf5c3ea1
AND
Problem signature:
  Problem Event Name:               APPCRASH
  Application Name:                   Acrobat.exe
  Application Version:                 9.5.1.283
  Application Timestamp:            4f71b565
  Fault Module Name:                 atidxx32.dll_unloaded
  Fault Module Version:              0.0.0.0
  Fault Module Timestamp:         4e0a91a0
  Exception Code:                       c0000005
  Exception Offset:                      69af8651
  OS Version:                             6.1.7601.2.1.0.256.48
    Locale ID:              1033
If I try to get it to create a dump file, the program crashes before I can click on it in task manager to tell it to create a dump file, and I get another error message stating "The operation could not be completed. Access is denied." If I could get to it fast enough in task manager, it might create a dump file, but it crashes too quickly.
I ran the repair fundction on the program, and the only thing I got from that was wasted time. I am running Windows 7, 64 bit. Everything is fully updated. Until I ran the most recent update to Acrobat 9, it was happy. It won't let me uninstall that update, so I need help getting this sorted out. Hope you can help. Thanks.

Answer 1

Okay, I went to the Dell site, which tried to give me an older driver for the wrong model video card, so I went to the AMD site, which correctly identified my card and gave me the correct newer driver. Installed it, restarted the computer for good measure, and I am getting the exact same problem I had before. At least it's reproduceable. I guess that's better that only doing it sometimes, but it sure is frustrating. I'm working hard at getting nowhere, but I appreciate your advice and support. Thanks.