Apple Power Macintosh 7300 series - PC Compatibility Card - Manual (Page 77)

Also, make sure drive C is assigned to a drive container or hard disk drive that
contains DOS or Windows software.
If you can’t find a drive container, it may have been installed on an external
drive that is not turned on, or on removable media that is not available. Or the
drive may have been thrown away or never created. (See Chapter 2,
“Installing the PC Compatibility Card Software,” for more information on
drive containers.)
My monitor flashes oddly when I switch environments.
When you are using a single monitor for both environments, there is a flash
when you switch from one environment to the other. If you prefer not to see
the flash, select the Fade Screens option in the PC Setup control panel.
Monitor problems
See also the troubleshooting section in Appendix E, “Configuring Video
Software.”
When I try to switch to the PC environment, my screen is blank or garbled.
Open the PC Setup control panel and check the Monitor portion of the
control panel.
If you see the message “Not Supported,” your monitor may not be compatible
with the PC Compatibility Card. Refer to Appendix E, “Configuring Video
Software,” for monitor specifications and video modes, and check with your
monitor vendor to see if your monitor conforms to these specifications.
If you see the message “No Monitor,” your monitor may not be connected
properly. Make sure your monitor is connected according to the instructions
in the chapter for installing the card in your computer model and Chapter 1,
“Connecting Monitors and Other Equipment.”
If you’re using a VGA monitor connected to a VGA-to-Macintosh adapter,
you may be able to reconfigure the adapter to identify itself to the PC
Compatibility Card and Macintosh. Check the documentation that came with
your monitor and adapter.
77 Troubleshooting