It's okay.. i only ask because i wonder if there're any specific drivers
necessary for the monitor for it to report its true EDID to Windows 7.. Windows 7 is rather dependant on the information reported by the monitor and in your case just using the generic drivers may be insufficient...
Can you head to Device Manager in your Control Panel, and go all the way down to monitors, right click on Generic PnP Monitor, select the Details tab and from the dropdown menu select Hardware Ids?
Note the value of the the property if you can and report it back please, thanks!
EDIT: Is it possible to connect the monitor via another connection (e.g. straight up DVI, HDMI or plain VGA?)