Re: Keyboard not working on boot
It shouldn't matter, as your keyboard and mouse were working before you changed the drives, but you could check the BIOS and see if it has a "legacy" setting (as in USB 1.x) and if that is disabled, then enable it.
If you have more than one USB port, you can try the other.
And yeah, you've probably already tried BOTH of these (since you aren't new to this) -- so please don't be insulted by my suggestions.
Ubuntu 15.04 Mate, Mint 17.1; MS Win 8.1, Win10 TP.
Will not respond to PM requests for support -- use the forums.