Hi,
I would suggest you to follow the steps provided and check if it helps.
Method 1: When you run an .exe file on a Windows XP, Windows Vista or Windows 7-based computer, the file may start a different program.
http://support.microsoft.com/kb/950505/
Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
How to back up the registry in Windows: http://windows.microsoft.com/en-in/windows7/back-up-the-registry
Method 2: Change default programs using Set Program Access and Computer Defaults: ****http://windows.microsoft.com/en-US/windows7/Change-default-programs-using-Set-Program-Access-and-Computer-Defaults
Change which programs Windows uses by default: http://windows.microsoft.com/en-US/windows7/Change-which-programs-Windows-uses-by-default
Refer to the link: Fix broken desktop shortcuts and common system maintenance tasks: http://support.microsoft.com/mats/system\_maintenance\_for\_windows/en-us
For any Windows related issues please feel free to contact us or let us know and we will be glad to help.