Connecting to my Mac mini, the monitor is in a 800x600 configuration, but only flashes on the screen and then the screen goes black. Not even using the "apple control p r" does not bring up any screen image. What am I missing
Resetting your Pram might help. Let the pram reset "bong" the Mac three times. Then let it reboot. Once the desktop comes back up, reboot again. This will reset your system cache.