When you run an .exe file the file may start a different program

When you run an .exe file on a Windows 7/ Vista based computer, the file may start a different program. Additionally, the icon for the .exe file may not appear as expected. You may also receive additional errors from the .exe file or from the program that starts. 

To resolve this problem, reset the registry sub key for the file association of the .exe file back to the default setting. Following these steps will help you reset the registry key: 

Windows Vista and Windows 7:

1.       To open the Task Manager, press CTRL + SHIFT + ESC. 

2.       Click File, press CTRL and click New Task (Run…) at the same time. A command prompt opens.

3.       At the command prompt, type notepad, and then press ENTER.

4.       Paste the following text into Notepad:

Windows Registry Editor Version 5.00

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\ \.exe] FileExts

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithList]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithProgids]

"exefile"=hex(0):

5.       On the File menu, click Save as.

6.       Select All Files in the Save as type list, and then type Exe.reg in the File name box.

7.       Select Unicode in the Encoding list. Save it and remember the file location.

8.       Return to the Command Prompt window, type REG IMPORT [filepath]Exe.reg, and then press ENTER.

9.       Click Yes, and then click OK in response to the registry prompts.

10.    Log off from your account. Then, log back onto your account.