I have a Durabrand steam cleaner, which I have used just once, with difficu?

My Durabrand steam cleaner was awkward to use on first trial, but haven,t used it again until today. It heats up OK, but when you depress the steam button, nothing happens. Lights to tell you it is ready to use have gone out and after leaving for longer, it still won,t stream spray. After one use this is a pain and of course the guarantee has expired.
Help.