Hi
I've used Agent Ransack for years as my search engine.
It will find pretty much anything and is unbelievably fast.
It has a number of selectable options for running searches.
For example "Contains text" etc.
Once it is installed it will be added to the right click menu, so all you have to do it click on the drive or folder you want to search and type in your search term.
It will retain it so you can search a series of locations without having to reenter your search.
I couldn't get along without it, it is far superior to the native Windows search engine.
Agent Ransack - Free File Searching Utility
I just searched my C:\drive for .exe and found 6,562 files in 5 seconds!
Mike