Main fuse blown? UPDATE...need further input

[nighthawk11]

Went to start the bike this morning. Put the key in, turned it, heard the "whir" of the fuel injection system, dash lights came on, hit the start button and everything just died. I didn't have time to check anything, so I turned the key off and got in the cage to come to work instead. I had the bike on a trickle charger last night because it was getting down to 30 degrees, and the battery just won't do enough at that temp. I did disconnect it before I tried to start it. I've done this for over two years on this battery and have never had an issue.
If this is a main fuse issue, where is the main fuse? I'll check all fuses in the box this afternoon too. It looks like I just blew a fuse, and I'm hoping someone here has experienced something like this before, and can offer some help.
Thanks...