I presume this applies only to Windows XP but you can also test on Vista.

Sometimes, for example if you try to change the default icon on a drive in windows ( by the way icon’s for drives can’t be changed like that ) you select a new icon and apply it. You will notice that the default action when clicking on a drive in windows becomes Search ( Find ) instead of Open. That is really annoing isn’t it ?

Well here’s the solution for you :

type regsvr32 /i shell32 in the command prompt ( start / run / cmd ).

It’ll get fixed in no time :)