I have the same problem on a quite new machine (Asus UX410UA). After pressing Esc there is no bootlog. It's hanged. Other distros are booting normally. The most interresting thing is when loki 0.4.1 arrived I tried to boot it and it worked. Now it does not (I redownloaded it). Sha sums are correct, it's not corrupted. Liveusb was created by dd command. It is booting in virtualbox. Nomodeset doesn't work.