how to switch from dvi to vga

[johno]

i have a s4000pro, connected to a hdmi monitor via a dvi adaptor, something messed up and the system shut down and when powered on, no video or audio to the monitor. i've been told before how to switch when this happens by doing something with the keyboard or track ball. does anyone know how to switch, because i'm thinking that when the system shut down it switched to vga or analog out. i've hooked up a computer monitor and a tv monitor with rca inputs and still no luck. thanks

[CasablancaExpert]

I have detailed the steps here for what I call the 'Emergency Monitor Switch' for the Bogart OS units: http://cassieexpert.live.subhub.com/articles/20090821_3
Hope this helps you!

Regards,
Chet