Ok at least we can progress from here. Sorry for some silly sounding questions but we need to be on the same page. When you say the rfm bios you aren't talkng about the pc bios, blue screen? Everything people have suggested referred to the screens that come up pressing the service buttons on the coin door. If you have modified any of the true pc bios settings please advise which one

I haven't been able to go into the PC bios or play around with it yet due to not having an old keyboard.
I only ever go into the RFM service area ;-)