Hi. Thanks for writing.
One of the things to remove would be the "rhgb" options, and possibly the "quiet" option as well (is that two options?) Then you can see what the startup is doing and you can then report back the last few messages on the console or some errors that happen during the boot up
I tried removing rhgb and quite and there are no messages, only the blinking cursor as before.
Another thing to try is to boot each Fedora Live image between FC20 and FC23 to try and see where the failure starts. Especially, if FC23 doesn't work, does FC22?
I downloaded the netinst image for FC22 because it's not as large. Booting using this FC22 image freezes the Lenovo C540 as before.
I may download FC21 later. It takes a while to get 1.4 Gb on my link. Too bad I can't find the Fedora 20 image I had.
RM