I recently bought Doom 2 on steam for PC. I downloaded and installed it but when I ran the game it did its d.o.s thing and loaded the main title screen but with no menu and no music. None of the inputs work for it and I pressed every key on my keyboard but with no luck. can somebody please explain this to me? I'm running on 64 bit windows 8.1 AMD FX-8320 Eight Core processer and 8.00GB of RAM Thank you.