you can just open the door for free play and press demo
boot the machine and open the door to show the menu. have a look which games are installed. i'd be surprised if there was only one file on there.
failing all else, im sure i could download the program and gibve it to you. you would have to put it on a usb stick and place that on the motherboard.
I presme you mean the bottom door?
Opening the main cab to show the MPU, The MPU only has Bootloader, Test and Erase on it
I believe the previous owner pressed that trusty Erase button.
It is a 5 reel version marketed under the RED Gaming branch of Bar Crest i believe
Suspect it's the 5 reel Horizon version. Need to program off a flash card.
Looking at the MPU it has a USB A and B slot, cant see CF slot though, Will have a look, Even if that is the case i have the hardware to put it onto a flash card as well