did you install the latest version ?
where did you get the file from? (attention, random site can provide bad files)
are you sure you installed haxchi and not chbc?
There were issue like infinite loop when installing an old version of cbhc (I don't remember if haxchi had the problem, but logically it shouldn't)
don't delete it unless you are sure it's not cbhc.
at console boot, do you see text, can you access hidden boot menu by pressing home button? if you do, it's CBHC, and you'll brick by deleting the NDS title.