Ex-Pub Coffee-Table Type Machine not working

[pgs49sullit]

Hello to all. I have acquired a coffee-table type gaming machine from a closed-down pub, but it doesn't work. Having inspected the insides it seems to be complete with plenty of dust etc inside, so I doubt its been messed with. It has a GA-6BXC mainboard with a very noisy 6Gig hard disk and a floppy drive and it came with a box of games on floppies with the file RUN.BA# on each one. The CRT is out of tune and could need replacing. It has a JAMMA JPAC thingy as well and this feeds from the MB graphics card and Mouse connector as well as the coin box. There is a SoundBlaster card on the MB which provides the sound - not that i've ever heard anything from it. Machine loads the BIOS, queries the floppy and then stops. The cursor stays flashing very quickly at the top lh corner of the screen. (This I know as I substituted the CRT with a flat panel screen connected to the graphics card).

I don't know where to start. Experience tells me that noisy HDs are usually naff HDs so I'd try that first probably. But, what OS to install would DOS do it do ou think. Is the front loader on the JAMMA card or what? Please help, I know nothing. Thanks a lot.

Ok, motherboard is ok - got Win 98 SE running on it ok. PCI cards seem to work ok too. So what next? How do it get this thing to talk to the JAMMA card? Can I adapt the JAMMA card so that I can run a flat screen monitor so I can ditch the CRT? I'm floundering here fellas, can someone please help me?