solid black line in the middle of monitor

[POS]

I've loaded Fraggals boot CD.  I start up the pc I have to use a pc monitor to start out with but once it goes into Arcadeos I plug in my Arcade moniotr and looks good.  no Flicker very clean.  but when I exe a ROM I get the black line down the middle.  Is thsi a resolution issue? and is their any way to keep the arcade monitor on the whole time without having to keep swaping monitors

[SirPeale]

Why do you have to swap monitors at all?

Can you show us a picture of the 'black line' please?

[Orclord]

Also iirc there was a setting in arcadeos.cfg

#Beep through SB if found
beepfm=0

This would beep when arcadeos had loaded so you could turn your monitor on...