TheSearchMan is a free to use tool which lets you files in windows instantly where ever it is, irrespective it is a system or hidden file. This isa very small tool which occupies only 50 kb on your hard drive but can perform much better search than default windows search. Some time back we had written about another free fast desktop search tool and some other related articles Fix Search Option Missing, Fix Drive Icon Opens Search
Moreover this small search tool further filters out the search more by providing you the option of searching the search results you got after the first query you typed.
The overall search is performed very fast, it has auto indexing support added and searching speed is amazing, I am sure you will love it.