|From the information I can gather , it is an all-in-one touch screen computer. Like laptops, there is not too much that is intended as user serviceable. They generally need to be brought to a qualified service technician.|
Check back later in case there some suggestions, otherwise you may want to look up the recommended service in your area.
In the mean time, tell us if you have any partial start, lights, sounds, or anything. If not, it is very likely the internal power supply. While you are at it, make sure that the power cord in fully inserted at the back of the machine, and the outlet and/or power strip is currently working by trying something else there.
You have to be a little bit crazy to keep you from going insane.