Dragon Warrior I Problem

I recently bought a YOBO FC Game Console and am having trouble getting this game to work (I am using the NES cartridge). I cannot tell if it is the game's problem or the system's problem. Any solutions? I've asked everywhere and the only person whose answered my question was the seller of the Dragon Warrior. Hoping someone else here has encountered and overcome this problem. Thanks.

I've heard of the Yobo system not being able to play some nes games, infact, you can probably google a list of games it wont play. This is why I wont buy one. Your best bet for retro gaming is to splurge for an original nes.