My boot wont pop open in my AU

[rosebush]

Im trying to work out why my boot suddenly stopped working before I go get ripped off by some electrician (A common problem I as a girl has)
Basically I know nothing but honestly can learn.
When I press the boot release switch on dash I hear a clicking noise coming from what I think might be the computer?? (the yellow wire box looking thing under dash) but the boot will not release open....The same thing happens when I use the keypad.
Is there a relay switch or fuse I should be checking first?, Im hoping there is some easy explanation for this so I can prove to hubby how smart I can be with fords.. Im currently having to open the boot climbing through the back seat and this is really anoying...Id love some help guys please...
AU Ser 1 sedan 6 cyl...