Toyota Corolla 2013 cranks but won't start. Ecu apparently not getting power

So my car died the other day while at work. It has
had problems starting on the days prior. I was able
to get a jump and get home. When I got
home(about a 30min trip) I cut my engine off and
tried turning it back on. All I got was clicking.
Assuming it was the battery I got it replaced and
now all I get is a crank but no start. A jump won't
help either. When I turn the key to the on position
the CEL does not come on. I'm thinking it's a
damaged fuse or wiring. Also when I turn the key in
the on position I can hear a fan running but I never
recall this fan running before when the key was only
in the on position. Any suggestions or insight from
someone who knows a little more about car would
be appreciated.