These should help :
When you double-click an .EXE file, the program may not launch, instead it may open in Notepad
(displaying the .exe contents), or may launch in any other application.
to fix it...u may try this..
1. Disable or uninstall ur current Antivirus Software..
2. Go to Control Panel>System and Security>Action Center>Recovery>Open System Restore>click next
3. Select the Date when your PC was running Properly>click next..N click Finish...
4. Ur pc will start restoring...n automatically Restart..
5. done!!!
THANKS..
This will surely work
