the clicky noise could well be your hard disc dying
the files could be something nasty ... or just corrupt files
I'm guessing that as you can see the files ... windows does eventually start.
it's a bit of devil and deep blue sea
just proving it could kill it.
backup anything you can gat at (if there's anything you want to get at)
then ... open my computer
right click C: | properties | tools | error checking
test the disc
alternatively - open a command prompt .. type chkdsk /f
come back with the result