If there was a burned strange smell in your room, then your PSU got fried. I tried it myself, and it took almost everything inside the desktop with it.
It could also be some other components that have been overheating, it's hard to tell. If you got another desktop then you could try putting each piece of hardware one by one inside the other, and then you could be 100% sure what is wrong.
I hope you'll figure it out and if you don't,then I really hope you got warranty, mate!