Q: itunes not working on windows 7 64bit

i have downloaded itunes from apple site and it is installed as well but when i am trying to open itunes it shows "itunes has stopped working"

check online for a solution and close program

close the program

Problem details :

Problem signature:

  Problem Event Name: APPCRASH

  Application Name: iTunes.exe

  Application Version: 12.1.0.71

  Application Timestamp: 54c76235

  Fault Module Name: iTunes.dll

  Fault Module Version: 12.1.0.71

  Fault Module Timestamp: 54c7621b

  Exception Code: c000001d

  Exception Offset: 0000000001503200

  OS Version: 6.1.7600.2.0.0.256.48

  Locale ID: 1033

  Additional Information 1: d7f7

  Additional Information 2: d7f7cf25a9f5db8bfc52c27417244498

  Additional Information 3: 124a

  Additional Information 4: 124ac5bb1d54a8df7aef83e35cc0ebcb

please advise what should i do now....