An "always on" computer

[ELItheICEman]

Hi guys, I work for a video game company and I have a quick question. We have a game (Deal or no Deal to be precise) that the core (PC) doesn't start up sometimes when power is applied to cabinet. This irritates my boss to no end and I would like to come up with a permanent solution. One stipulation is I don't want to mod the pc very much because we may have to send it back to our distributor someday. My idea was to use a ATX 20 pin extender that I salvaged and short the green wire to ground on the plug that goes to the psu. Of course I know this works because everyone at some time has used one for a power supply (guilty I use one on my bench ) ) My question is, is this any different when a motherboard is in the equation? I wasn't going to connect the green wire through to the motherboard, is there any reason not to do this? And yes the motherboard is set to boot up after power loss in the BIOS. Thx!