I have windows 7 and downloaded a program (.exe possibly containing a virus), but didn't install it. Then I right clicked on the program > open with > notepad (always use this program not selected), which opened notepad with an error. All programs got the notepad file icon and opened with notepad.
After searching Microsoft help pages and contacting technical support, I followed this article http://support.microsoft.com/kb/2688326. Which solved the problem (i can now run programs). However now if I right click on a program which is supposed to say
run as the first option it says
can someone with Windows 7 home premium tell me what it says in the three registries, it speaks about in the link.
@Amirreza Nasiri your answer is only based on a spelling mistake I made (and corrected) in the question. and therefore didn't solve the problem.