If you have a custom recovery installed, mount USB storage, put custom ROM into internal storage, unmount, boot up.
Top reliable phones I have had: HTC One. LG G2, Nexus 4, Note 2, Nokia 5800, Motorola RAZR V3X, Motorola RAZR i, Nexus 5 Had many more, but these devices were the best IMO.
Current Phone: BACK TO HTC ONE! Missed everything about it.
Press THANKS if I helped you
It is nice to know when you helped somebody out!