i think your problem happened with the install, are you sure you have installed the win10 correctly? did you upgrade from previous window or update to a new one? what version of windows did you before installing?
could also be connections errors! try this: shout down pc and disconnecting all cable or cords completely from outlet or sockets, remove your hdmi , then connect all cables to your pc first then to socket, don't use hdmi cable this time and turn pc on. if it works it's probably caused by hdmi not working or not compatible wit pc, if pc don't work try re-install your windows again use another disc just in case or you can use the same.